156538916 has 6 divisors (see below), whose sum is σ = 273943110. Its totient is φ = 78269456.

The previous prime is 156538849. The next prime is 156538931. The reversal of 156538916 is 619835651.

It can be written as a sum of positive squares in only one way, i.e., 78393316 + 78145600 = 8854^2 + 8840^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19567361 + ... + 19567368.

It is an arithmetic number, because the mean of its divisors is an integer number (45657185).

Almost surely, 2^156538916 is an apocalyptic number.

It is an amenable number.

156538916 is a deficient number, since it is larger than the sum of its proper divisors (117404194).

156538916 is a wasteful number, since it uses less digits than its factorization.

156538916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39134733 (or 39134731 counting only the distinct ones).

The product of its digits is 194400, while the sum is 44.

The square root of 156538916 is about 12511.5513026962. The cubic root of 156538916 is about 538.9404417861.

The spelling of 156538916 in words is "one hundred fifty-six million, five hundred thirty-eight thousand, nine hundred sixteen".