Properties of the Number 1913

One Thousand Nine Hundred Thirteen

Basics

Value: 1912 → 1913 → 1914

Parity: odd

Prime: Yes

Previous Prime: 1907

Next Prime: 1931

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 1913

Divisors: 1, 1913

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11101111001

Octal: 3571

Duodecimal: 1135

Hexadecimal: 779

Square: 3659569

Square Root: 43.73785545725808

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: Yes

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

Primes of the form 2x² + 2xy + 17y². A139827

Twice partitioned numbers: the number of ways a number can be partitioned into not necessarily different parts and each part is again so partitioned. A63834

Number of partitions of n into parts 5k+1 or 5k+4. A3114

Number of numerical semigroups with Frobenius number n; that is, numerical semigroups for which the largest integer not belonging to them is n. A124506

Primes prime(k) for which A049076(k) = 2. A49078

Honaker primes: primes P(k) such that sum of digits of P(k) equals sum of digits of k. A33548

Primes whose base-9 representation is also the base-6 representation of a prime. A235639

Smaller of two consecutive primes which are anagrams of each other. A69567

Total number of ON cells at stage n of two-dimensional cellular automaton defined by "Rule 750" using the von Neumann neighborhood. A169707

Primes of the form 16n+9. A105126