Properties of the Number -186

One Hundred Eighty-Six

Basics

Value: -187 → -186 → -185

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 15

Digital Root: 6

Palindrome: No

Factorization: 2 × 3 × 31

Divisors: 1, 2, 3, 6, 31, 62, 93, 186

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -10111010

Octal: -272

Duodecimal: -136

Hexadecimal: -ba

Square: 34596

Square Root: 13.638181696985855

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

Triangle composed of generalized Catalan numbers. A64334

Generalized Catalan numbers C(-1; n). A64310

a(n) = ∑_k=0..n k^p*q^k, where p=3, q=-2. A232602

Partial alternating sums of the Dedekind ψ function (A001615): a(n) = ∑_k=1..n (-1)^k+1 * ψ(k). A357817

Expansion of 1/(1+x·c(x)), c(x) the g.f. of Catalan numbers A000108. A126983

Result of using the positive integers 1,2,3,... as coefficients in an infinite polynomial series in·and then expressing this series as ∏_k>=1 (1+a(k)x^k). A147654

a(n) = 1·2*3·4 - 5·6*7·8 + 9·10·11·12 - 13·14·15·16 + ... - (up to n). A319544

Expansion of (1-x)/(1-x+2·x²). A78020

Difference between sums of largest parts of all partitions of n into odd number of parts and into even number of parts. A222049

Expansion of 1/(1 - x*∏_k>=1 (1 - x^k)^k). A299211