157138766 has 8 divisors (see below), whose sum is σ = 240723360. Its totient is φ = 76897648.

The previous prime is 157138763. The next prime is 157138777. The reversal of 157138766 is 667831751.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157138763) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 835751 + ... + 835938.

It is an arithmetic number, because the mean of its divisors is an integer number (30090420).

Almost surely, 2^157138766 is an apocalyptic number.

157138766 is a deficient number, since it is larger than the sum of its proper divisors (83584594).

157138766 is a wasteful number, since it uses less digits than its factorization.

157138766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1671738.

The product of its digits is 211680, while the sum is 44.

The square root of 157138766 is about 12535.5002293486. The cubic root of 157138766 is about 539.6279627624.

The spelling of 157138766 in words is "one hundred fifty-seven million, one hundred thirty-eight thousand, seven hundred sixty-six".