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Properties of the Number -191919

One Hundred Ninety-One Thousand Nine Hundred Nineteen

Basics

Value: -191920 → -191919 → -191918

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 30

Digital Root: 3

Palindrome: No

Factorization: 3 × 7 × 13 × 19 × 37

Divisors: 1, 3, 7, 13, 19, 21, 37, 39, 57, 91

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -101110110110101111

Octal: -566657

Duodecimal: -93093

Hexadecimal: -2edaf

Square: 36832902561

Square Root: 438.0856080722123

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*(n-1)*(n-2)*(n+3)/12. A117662
Squarefree integers m > 1 such that if prime p divides m, then sp(m) >= p and sp(m) == 3 (mod p-1), where sp(m) is the sum of the base p digits of m. A324405
Numbers whose consecutive digits differ by 8. A48410
Number of exterior points formed by extending diagonals of n-gon in general position. A5701
Denominator of (2n+1)(2n+2) B2n, where Bn are the Bernoulli numbers. Also denominators of the asymptotic expansion of the polygamma function ψ'''(z). A6956
a(n) = lcm(n, n+1, n+2, n+3, n+4) / 60. A67048
A121153 \ A005836. A170830
Consider a decimal number of k>=2 digits x = dk*10k-1 + dk-1*10k-2 + … + d2*10 + d1 and the transform T(x)-> (dk+dk-1 mod 10)*10k-1 + (dk-1+dk-2 mod 10)*10k-2 + … + (d2+d1 mod 10)*10 + (d1+d(k) mod 10). Sequence lists the numbers·such that T(x)=0. A243994
Numbers m with decimal expansion (dk, ..., d1) such that di = m ^ i mod 10 for i = 1..k. A344749
Number of scalars which can be constructed from the Riemann tensor and metric tensor in n dimensions. A50297