157145978 has 32 divisors (see below), whose sum is σ = 261569088. Its totient is φ = 70214400.

The previous prime is 157145939. The next prime is 157146013. The reversal of 157145978 is 879541751.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 567176 + ... + 567452.

It is an arithmetic number, because the mean of its divisors is an integer number (8174034).

Almost surely, 2^157145978 is an apocalyptic number.

157145978 is a deficient number, since it is larger than the sum of its proper divisors (104423110).

157145978 is a wasteful number, since it uses less digits than its factorization.

157145978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 638.

The product of its digits is 352800, while the sum is 47.

The square root of 157145978 is about 12535.7878890798. The cubic root of 157145978 is about 539.6362181777.

The spelling of 157145978 in words is "one hundred fifty-seven million, one hundred forty-five thousand, nine hundred seventy-eight".