1580994465 has 32 divisors (see below), whose sum is σ = 2664990720. Its totient is φ = 798139584.

The previous prime is 1580994461. The next prime is 1580994473. The reversal of 1580994465 is 5644990851.

It is not a de Polignac number, because 1580994465 - 2² = 1580994461 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1580994461) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 644872 + ... + 647318.

It is an arithmetic number, because the mean of its divisors is an integer number (83280960).

Almost surely, 2^1580994465 is an apocalyptic number.

1580994465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1580994465 is a deficient number, since it is larger than the sum of its proper divisors (1083996255).

1580994465 is a wasteful number, since it uses less digits than its factorization.

1580994465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4741.

The product of its (nonzero) digits is 1555200, while the sum is 51.

The square root of 1580994465 is about 39761.7211020851. The cubic root of 1580994465 is about 1164.9575933037.

The spelling of 1580994465 in words is "one billion, five hundred eighty million, nine hundred ninety-four thousand, four hundred sixty-five".