Properties of the Number -1885

Eight Hundred Eighty-Five

Basics

Value: -1886 → -1885 → -1884

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 5 × 13 × 29

Divisors: 1, 5, 13, 29, 65, 145, 377, 1885

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -11101011101

Octal: -3535

Duodecimal: -1111

Hexadecimal: -75d

Square: 3553225

Square Root: 43.41658669218482

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Expansion of (-1-8·x-12·x²-4·x³+4·x⁴) / ((x-1)*(3·x²+3·x+1)*(2·x³+2·x²+4·x+1)). A110684

Number of series-reduced planted trees with n nodes. A1678

Expansion of 1/((1-x)*(1-12·x)). A16125

Coordination sequence for 3D uniform tiling formed by stacking parallel layers of the 4.6.12 2D tiling (cf. A072154). A299258

a(n) = n³ + n² + n + 1. A53698

Number of partitions of n in which each part occurs an odd number (or zero) times. A55922

Numbers k such that k, k+1 and k+2 have the same number of divisors. A5238

Generalized 26-gonal (or icosihexagonal) numbers: m*(12·m - 11) with m = 0, +1, -1, +2, -2, +3, -3, ... A316724

Number of non-isomorphic T₀-covers of n vertices by distinct sets. A319637

Number of planar partitions of n with all part sizes distinct. A117433