Properties of the Number -1812

Eight Hundred Twelve

Basics

Value: -1813 → -1812 → -1811

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 2 ² × 3 × 151

Divisors: 1, 2, 3, 4, 6, 12, 151, 302, 453, 604

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -11100010100

Octal: -3424

Duodecimal: -1070

Hexadecimal: -714

Square: 3283344

Square Root: 42.567593307585526

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

Dirichlet convolution of Fibonacci numbers with A349452 (Dirichlet inverse of A011782, 2^n-1). A349565

Expansion of the 96th root of the series 2·E₂(x) - E₂(x)², where E₂ is the Eisenstein series of weight 2. A377973

Series expansion of the exponential generating function LambertW(1-exp(x)), see A000169. A383985

Dirichlet inverse of A358764. A359427

a(n) = (12-7·6ⁿ)/5. A165758

Expansion of (1-x)^-1/(1-x+2·x²-2·x³). A77874

Triangle read by rows: T(n,k) = ∑_j>=0 j!*T(n-j-1, k-1) for n >= 0, k >= 0. A84938

Number of partitions of n with equal number of even and odd parts. A45931

a(n) = ∑_k=0..n k!*(n - k)!. A3149

Numbers n such that n³² + 1 is prime. A6315