Properties of the Number 18613

Eighteen Thousand Six Hundred Thirteen

Basics

Value: 18612 → 18613 → 18614

Parity: odd

Prime: No

Previous Prime: 18593

Next Prime: 18617

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 7 × 2659

Divisors: 1, 7, 2659, 18613

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 100100010110101

Octal: 44265

Duodecimal: A931

Hexadecimal: 48b5

Square: 346443769

Square Root: 136.4294689574067

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) = floor(nⁿ / n!). A55775

Numbers n such that A242719(n) = (prime(n))²+1 and A242720(n) - A242719(n) = 2*(prime(n)+1). A246748

Total of n-colorings of parts of all integer partitions of n. A178887

Conjectured least number k such that prime(n) is the largest divisor of k³ + 1, or 0 if there is no such k. A223707

a(n) = floor(n^n/2/n!!). A114854

a(n) = floor(n^n/3/n!!!). A114863

Number of -n..n arrays x(0..3) of 4 elements with zero sum and no element more than one greater than the previous. A199848

Numbers k such that k, k+1, k+2, k+3 have 2, 3, 4, 5 prime factors respectively, counted with multiplicity. A363391

Squarefree semiprimes k such that k+1 is the product of three distinct primes and k+2 is the product of four distinct primes. A376352

Divisors of 726. A18613