Properties of the Number -18563

Eighteen Thousand Five Hundred Sixty-Three

Basics

Value: -18564 → -18563 → -18562

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 19 × 977

Divisors: 1, 19, 977, 18563

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100100010000011

Octal: -44203

Duodecimal: -A8AB

Hexadecimal: -4883

Square: 344584969

Square Root: 136.24610086163935

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

Values of n such that L(20) and N(20) are both prime, where L(k) = (n²+n+1)*2^2·k + (2·n+1)*2^k + 1, N(k) = (n²+n+1)*2^k + n. A227523

Number of series-reduced rooted trees whose leaves are strict integer partitions whose multiset union is a strict integer partition of n. A320176

Pisot sequence L(6,7). A48585

Third column (m=4) of array A090452. A90453

a(n) = binomial(n,6)-1. A124089

a(n) is the n-th J₁₉-prime (Josephus₁₉ prime). A163799

Number of nonempty subsets of {1,2,...,n} in which exactly 1/2 of the elements are <= n/3. A47193

Pisot sequence L(7,9). A48589

Number of achiral molecules containing two linear or branched chiral alkyl chains of n carbon atoms each. A261336

Number of nonempty subsets of {1,2,...,n} in which exactly 1/2 of the elements are <= (n+1)/3. A48038