238640713188 has 24 divisors (see below), whose sum is σ = 556843546560. Its totient is φ = 79544730720.

The previous prime is 238640713139. The next prime is 238640713193. The reversal of 238640713188 is 881317046832.

It is a self number, because there is not a number n which added to its sum of digits gives 238640713188.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 221553 + ... + 725511.

It is an arithmetic number, because the mean of its divisors is an integer number (23201814440).

Almost surely, 2^238640713188 is an apocalyptic number.

It is an amenable number.

238640713188 is an abundant number, since it is smaller than the sum of its proper divisors (318202833372).

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

238640713188 is a wasteful number, since it uses less digits than its factorization.

238640713188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543427 (or 543425 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 51.

The spelling of 238640713188 in words is "two hundred thirty-eight billion, six hundred forty million, seven hundred thirteen thousand, one hundred eighty-eight".