157639794 has 32 divisors (see below), whose sum is σ = 341288640. Its totient is φ = 48253632.

The previous prime is 157639771. The next prime is 157639813. The reversal of 157639794 is 497936751.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10237 + ... + 20495.

It is an arithmetic number, because the mean of its divisors is an integer number (10665270).

Almost surely, 2^157639794 is an apocalyptic number.

157639794 is an abundant number, since it is smaller than the sum of its proper divisors (183648846).

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

157639794 is a wasteful number, since it uses less digits than its factorization.

157639794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10474.

The product of its digits is 1428840, while the sum is 51.

The square root of 157639794 is about 12555.4686889817. The cubic root of 157639794 is about 540.2008786252.

The spelling of 157639794 in words is "one hundred fifty-seven million, six hundred thirty-nine thousand, seven hundred ninety-four".