238193157957 has 32 divisors (see below), whose sum is σ = 338601074688. Its totient is φ = 148593303936.

The previous prime is 238193157949. The next prime is 238193157977. The reversal of 238193157957 is 759751391832.

It is not a de Polignac number, because 238193157957 - 2³ = 238193157949 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 238193157957.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (238193157977) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7842633 + ... + 7872945.

It is an arithmetic number, because the mean of its divisors is an integer number (10581283584).

Almost surely, 2^238193157957 is an apocalyptic number.

It is an amenable number.

238193157957 is a deficient number, since it is larger than the sum of its proper divisors (100407916731).

238193157957 is a wasteful number, since it uses less digits than its factorization.

238193157957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32809.

The product of its digits is 14288400, while the sum is 60.

The spelling of 238193157957 in words is "two hundred thirty-eight billion, one hundred ninety-three million, one hundred fifty-seven thousand, nine hundred fifty-seven".