158931404 has 12 divisors (see below), whose sum is σ = 279081264. Its totient is φ = 79193904.

The previous prime is 158931379. The next prime is 158931433. The reversal of 158931404 is 404139851.

158931404 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×158931404² = 50518382354822432, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66632 + ... + 68975.

It is an arithmetic number, because the mean of its divisors is an integer number (23256772).

Almost surely, 2^158931404 is an apocalyptic number.

It is an amenable number.

158931404 is a deficient number, since it is larger than the sum of its proper divisors (120149860).

158931404 is a wasteful number, since it uses less digits than its factorization.

158931404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135904 (or 135902 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 158931404 is about 12606.7999111591. The cubic root of 158931404 is about 541.6722327581.

The spelling of 158931404 in words is "one hundred fifty-eight million, nine hundred thirty-one thousand, four hundred four".