913615920 has 120 divisors (see below), whose sum is σ = 3506564256. Its totient is φ = 208825344.

The previous prime is 913615909. The next prime is 913615933. The reversal of 913615920 is 29516319.

913615920 is a `hidden beast` number, since 9 + 1 + 3 + 61 + 592 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 85597 + ... + 95676.

Almost surely, 2^913615920 is an apocalyptic number.

913615920 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

913615920 is an abundant number, since it is smaller than the sum of its proper divisors (2592948336).

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

913615920 is a wasteful number, since it uses less digits than its factorization.

913615920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181299 (or 181290 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 36.

The square root of 913615920 is about 30226.0801295835. The cubic root of 913615920 is about 970.3339339863. Note that the first 3 decimals are identical.

The spelling of 913615920 in words is "nine hundred thirteen million, six hundred fifteen thousand, nine hundred twenty".