157166538 has 16 divisors (see below), whose sum is σ = 316416576. Its totient is φ = 52041600.

The previous prime is 157166533. The next prime is 157166549. The reversal of 157166538 is 835661751.

It is a self number, because there is not a number n which added to its sum of digits gives 157166538.

It is not an unprimeable number, because it can be changed into a prime (157166531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 85831 + ... + 87642.

It is an arithmetic number, because the mean of its divisors is an integer number (19776036).

Almost surely, 2^157166538 is an apocalyptic number.

157166538 is an abundant number, since it is smaller than the sum of its proper divisors (159250038).

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

157166538 is a wasteful number, since it uses less digits than its factorization.

157166538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173629.

The product of its digits is 151200, while the sum is 42.

The square root of 157166538 is about 12536.6079144241. The cubic root of 157166538 is about 539.6597513642.

The spelling of 157166538 in words is "one hundred fifty-seven million, one hundred sixty-six thousand, five hundred thirty-eight".