157929538 has 16 divisors (see below), whose sum is σ = 255451896. Its totient is φ = 72794880.

The previous prime is 157929529. The next prime is 157929547. The reversal of 157929538 is 835929751.

It is an interprime number because it is at equal distance from previous prime (157929529) and next prime (157929547).

It can be written as a sum of positive squares in 4 ways, for example, as 23299929 + 134629609 = 4827^2 + 11603^2 .

It is a junction number, because it is equal to n+sod(n) for n = 157929491 and 157929500.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18618 + ... + 25738.

Almost surely, 2^157929538 is an apocalyptic number.

157929538 is a deficient number, since it is larger than the sum of its proper divisors (97522358).

157929538 is a wasteful number, since it uses less digits than its factorization.

157929538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7989.

The product of its digits is 680400, while the sum is 49.

The square root of 157929538 is about 12567.0019495503. The cubic root of 157929538 is about 540.5316414822.

Subtracting from 157929538 its sum of digits (49), we obtain a square (157929489 = 12567²).

The spelling of 157929538 in words is "one hundred fifty-seven million, nine hundred twenty-nine thousand, five hundred thirty-eight".