961164780 has 48 divisors (see below), whose sum is σ = 2832910080. Its totient is φ = 242820288.

The previous prime is 961164749. The next prime is 961164821. The reversal of 961164780 is 87461169.

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, 420424 + ... + 422703.

It is an arithmetic number, because the mean of its divisors is an integer number (59018960).

Almost surely, 2^961164780 is an apocalyptic number.

It is an amenable number.

961164780 is an abundant number, since it is smaller than the sum of its proper divisors (1871745300).

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

961164780 is a wasteful number, since it uses less digits than its factorization.

961164780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 843158 (or 843156 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 961164780 is about 31002.6576280163. The cubic root of 961164780 is about 986.8836399402.

The spelling of 961164780 in words is "nine hundred sixty-one million, one hundred sixty-four thousand, seven hundred eighty".