238139358164 has 6 divisors (see below), whose sum is σ = 416743876794. Its totient is φ = 119069679080.

The previous prime is 238139358139. The next prime is 238139358179. The reversal of 238139358164 is 461853931832.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 217472995600 + 20666362564 = 466340^2 + 143758^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 29767419767 + ... + 29767419774.

It is an arithmetic number, because the mean of its divisors is an integer number (69457312799).

Almost surely, 2^238139358164 is an apocalyptic number.

It is an amenable number.

238139358164 is a deficient number, since it is larger than the sum of its proper divisors (178604518630).

238139358164 is a wasteful number, since it uses less digits than its factorization.

238139358164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59534839545 (or 59534839543 counting only the distinct ones).

The product of its digits is 3732480, while the sum is 53.

The spelling of 238139358164 in words is "two hundred thirty-eight billion, one hundred thirty-nine million, three hundred fifty-eight thousand, one hundred sixty-four".