157391664 has 40 divisors (see below), whose sum is σ = 412330752. Its totient is φ = 51723840.

The previous prime is 157391639. The next prime is 157391669. The reversal of 157391664 is 466193751.

It is not an unprimeable number, because it can be changed into a prime (157391669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19684 + ... + 26499.

Almost surely, 2^157391664 is an apocalyptic number.

It is an amenable number.

157391664 is an abundant number, since it is smaller than the sum of its proper divisors (254939088).

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

157391664 is a wasteful number, since it uses less digits than its factorization.

157391664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46265 (or 46259 counting only the distinct ones).

The product of its digits is 136080, while the sum is 42.

The square root of 157391664 is about 12545.5834459781. The cubic root of 157391664 is about 539.9172987204.

The spelling of 157391664 in words is "one hundred fifty-seven million, three hundred ninety-one thousand, six hundred sixty-four".