961157904 has 80 divisors (see below), whose sum is σ = 2935585920. Its totient is φ = 265144320.

The previous prime is 961157893. The next prime is 961157941. The reversal of 961157904 is 409751169.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39577 + ... + 59064.

It is an arithmetic number, because the mean of its divisors is an integer number (36694824).

Almost surely, 2^961157904 is an apocalyptic number.

It is an amenable number.

961157904 is an abundant number, since it is smaller than the sum of its proper divisors (1974428016).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

961157904 is a wasteful number, since it uses less digits than its factorization.

961157904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98688 (or 98682 counting only the distinct ones).

The product of its (nonzero) digits is 68040, while the sum is 42.

The square root of 961157904 is about 31002.5467340991. The cubic root of 961157904 is about 986.8812866052.

The spelling of 961157904 in words is "nine hundred sixty-one million, one hundred fifty-seven thousand, nine hundred four".