Category:1 (number)

1
	natural number
	Wikipedia; Wikiquote
Instance of	natural number (0, 2, ISO 80000–2:2009: Quantities and units—Part 2: Mathematical signs and symbols to be used in the natural sciences and technology),; automorphic number (0, 5),; numeral noun,; odd number (3),; triangular number (0, 3),; centered triangular number (4),; square number (0, 4),; cube (0, 8),; centered cube number (9),; centered decagonal number (11),; centered dodecahedral number (33),; centered heptagonal number (8),; centered hexagonal number (7),; centered icosahedral number (13),; centered nonagonal number (10),; centered octagonal number (9),; centered octahedral number (7),; centered pentachoric number (6),; centered pentagonal number (6),; centered square number (5),; centered tetrahedral number (5),; dodecahedral number (0, 20),; decagonal number (0, 10),; dodecagonal number (12),; heptagonal number (7),; heptagonal pyramidal number (8),; hexagonal number (0, 6),; hexagonal pyramidal number (0, 7),; icosahedral number (12),; nonagonal number (9),; octagonal number (21),; pentagonal number (0, 5),; pentagonal pyramidal number (0, 6),; pentatope number (0, 5),; square pyramidal number (0, 5),; square triangular number (0, 36),; star number (13),; stella octangula number (0, 14),; tetrahedral number (0, 4),; Fibonacci number (2),; natural number (2),; power of two (½, 2),; power of 10 (⅒, 10),; power of 1000 (per mille, 1000),; unit (natural number),; non-negative integer (0, 2)
Series	Fibonacci series (1, 2);
Different from	1; 1;
Said to be the same as	Legendre's constant; 0.999...;
Authority control
	GND ID: 7724620-2
	Reasonator; Scholia; Statistics;

	number:	1 (one)
	instance of:	natural number, automorphic number, numeral noun, odd number, triangular number, centered triangular number, square number, cube, centered cube number, centered decagonal number, centered dodecahedral number, centered heptagonal number, centered hexagonal number, centered icosahedral number, centered nonagonal number, centered octagonal number, centered octahedral number, centered pentachoric number, centered pentagonal number, centered square number, centered tetrahedral number, dodecahedral number, decagonal number, dodecagonal number, heptagonal number, heptagonal pyramidal number, hexagonal number, hexagonal pyramidal number, icosahedral number, nonagonal number, octagonal number, pentagonal number, pentagonal pyramidal number, pentatope number, square pyramidal number, square triangular number, star number, stella octangula number, tetrahedral number, Fibonacci number, natural number, power of two, power of 10, power of 1000, unit and non-negative integer
	other integers:	-16 • -12 • -8 • -2 • -1 • 0 • 1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 • 11 • 12 • 13 • 14 • 15 • 16 • 17 • 18 • 19 • 20 • 21 -20 • 0 • 10 • 20 • 30 • 40 • 50 • 60 • 70 • 80 • 90 • 100 • 110 • 120 • 130 • 140 • 150 • 160 • 170 • 180 • 190 • 200