Properties of the Number -1895

Eight Hundred Ninety-Five

Basics

Value: -1896 → -1895 → -1894

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 5 × 379

Divisors: 1, 5, 379, 1895

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -11101100111

Octal: -3547

Duodecimal: -111B

Hexadecimal: -767

Square: 3591025

Square Root: 43.53159771935783

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

Numerator of Bernoulli(n, -1/2). A157781

a(n) = numerator((-2)ⁿ*∑_k=0..n binomial(n,k) * Bernoulli(k, 1/2)). A285866

a(1) = 1; a(n+1) = a(n) +- (sum of digits of a(1) up to a(n)), with "+" when a(n) is odd, or "-" if even. A332058

Real part of Gaussian amicable numbers in order of increasing magnitude. See A102925 for the imaginary part. A102924

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 363", based on the 5-celled von Neumann neighborhood. A268194

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 313", based on the 5-celled von Neumann neighborhood. A271203

a(n) = Numerator(-2·n*HurwitzZeta(1 - 2·n, -1/2)) for n > 0, and a(0) = 1. A335954

Expansion of ∏_k>=1 (1 - x^k)^2·k-1. A319669

a(n) = floor(f(n)), where f(n) = n⁴*(15-24·n+10·n²) + 20·n⁵*(1-n)³ / (1-2·n(1-n)). A356571

Moebius transform of A064987, n*σ(n). A69097