Properties of the Number -1906

Nine Hundred Six

Basics

Value: -1907 → -1906 → -1905

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 2 × 953

Divisors: 1, 2, 953, 1906

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -11101110010

Octal: -3562

Duodecimal: -112A

Hexadecimal: -772

Square: 3632836

Square Root: 43.657759905886145

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 f(-q², -q⁵)³ / (f(-q¹, -q⁶) * f(-q³, -q⁴)²) in powers of q where f(, ) is Ramanujan's general θ function. A262933

Real part of g.f. C(x) that satisfies: C(x) = 1 + x·C(I·x)². A193377

Numerator of Hermite(n, 2/31). A160300

Numbers n such that n³² + 1 is prime. A6315

Numbers that are the sum of 9 positive 6th powers. A3365

Number of partitions of 4n into 4 parts. A238340

Semiprimes of form prime - 1. A77065

Partial sums of the squarefree numbers, A005117. A173143

Numbers k such that 3^k - 8 is prime. A217135

T(n,k)=Number of nXk 0..1 arrays with no element equal to more than one of its horizontal and antidiagonal neighbors, with the exception of exactly one element, and with new values introduced in order 0 sequentially upwards. A281205