Properties of the Number -1907

Nine Hundred Seven

Basics

Value: -1908 → -1907 → -1906

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 1907

Divisors: 1, 1907

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -11101110011

Octal: -3563

Duodecimal: -112B

Hexadecimal: -773

Square: 3636649

Square Root: 43.669211121796096

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

a(n) = -n² + 9·n + 53. A126665

Triangle of numerators for rational convergents to Taylor series of 1/γ(x+1). A386675

G.f. A(x) satisfies: (1 + x) = A(x)*A(x²)²*A(x³)³*A(x⁴)⁴* ... *A(x^k)^k* ... A307649

Expansion of x*(4+9·x-7·x²) / ((1-x)*(1+3·x-x²)). A134250

Safe primes p: (p-1)/2 is also prime. A5385

Balanced primes (of order one): primes which are the average of the previous prime and the following prime. A6562

Numbers n such that (17ⁿ - 2ⁿ)/15 is prime. A225807

Primes of the form 4·k² + 4·k + 59. A48988

Number of topologically connected set partitions of {1,...,n}. A99947

Primes of the form 30n - 13. A39949