Properties of the Number -1619

Six Hundred Nineteen

Basics

Value: -1620 → -1619 → -1618

Parity: odd

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 1619

Divisors: 1, 1619

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: -11001010011

Octal: -3123

Duodecimal: -B2B

Hexadecimal: -653

Square: 2621161

Square Root: 40.23679907746142

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

G.f. A(x) satisfies A(A(A(..(A(x))..))) = B(x) (10th self-COMPOSE of A) such that the coefficients of B(x) consist only of numbers {1,2,3,..,10}, with B(0) = 0. A112121

a(n)=det(M_n) where M_n is the n X n matrix m(i,j)=1 if σ(i+j) is odd, 0 otherwise. A96733

Safe primes p: (p-1)/2 is also prime. A5385

a(n) = prime(2ⁿ). A33844

The Matula-Goebel numbers of the generalized Bethe trees. A generalized Bethe tree is a rooted tree in which vertices at the same level have the same degree. A214577

Primes of the form 36·k² - 810·k + 2753, listed in order of increasing parameter k >= 0. A50268

Primes with only nonprime decimal digits. A34844

a(n) = prime(n²). A11757

Odd numbers not of form p + 2^k (de Polignac numbers). A6285

Primes that are palindromic in base 2 (but written here in base 10). A16041