Properties of the Number -18941

Eighteen Thousand Nine Hundred Forty-One

Basics

Value: -18942 → -18941 → -18940

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 13 × 31 × 47

Divisors: 1, 13, 31, 47, 403, 611, 1457, 18941

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: -100100111111101

Octal: -44775

Duodecimal: -AB65

Hexadecimal: -49fd

Square: 358761481

Square Root: 137.6263056250512

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) = -(n + 1)*(2·n² + n - 12)/6. A58372

Partial sums of A299272. A299273

Lengths of complete iterations (direct and reverse branches) of the Kolakoski sequence A000002. A249508

Numbers M(n) which are the number of terms in the sums of consecutive cubed integers equaling a squared integer, b³ + (b+1)³ + ... + (b+M-1)³ = c², for a first term b(n) being an odd squared integer (A016754). A253707

a(n) = n*(2·n² - 3·n + 4)/3. A37235

Sum of the even-indexed parts of all partitions of n. A207382

Product of n and the sum of remainders of n mod k, for k = 1, 2, 3, ..., n. A256532

Engel expansion for tan(1). A84652

Nonsemiprimes in A306097 = A121707 \ A267999. A321488

Number of (w,x,y) with all terms in {0,...,n} and x ≠ min(|w-x|, |x-y|). A213502