157391916 has 48 divisors (see below), whose sum is σ = 424206720. Its totient is φ = 44888320.

The previous prime is 157391887. The next prime is 157391917. The reversal of 157391916 is 619193751.

It is not an unprimeable number, because it can be changed into a prime (157391917) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32826 + ... + 37313.

It is an arithmetic number, because the mean of its divisors is an integer number (8837640).

Almost surely, 2^157391916 is an apocalyptic number.

It is an amenable number.

157391916 is an abundant number, since it is smaller than the sum of its proper divisors (266814804).

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

157391916 is a wasteful number, since it uses less digits than its factorization.

157391916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70174 (or 70172 counting only the distinct ones).

The product of its digits is 51030, while the sum is 42.

The square root of 157391916 is about 12545.5934893492. The cubic root of 157391916 is about 539.9175868743.

The spelling of 157391916 in words is "one hundred fifty-seven million, three hundred ninety-one thousand, nine hundred sixteen".