138925180388 has 6 divisors (see below), whose sum is σ = 243119065686. Its totient is φ = 69462590192.

The previous prime is 138925180379. The next prime is 138925180391. The reversal of 138925180388 is 883081529831.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 130662006784 + 8263173604 = 361472^2 + 90902^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17365647545 + ... + 17365647552.

It is an arithmetic number, because the mean of its divisors is an integer number (40519844281).

Almost surely, 2^138925180388 is an apocalyptic number.

It is an amenable number.

138925180388 is a deficient number, since it is larger than the sum of its proper divisors (104193885298).

138925180388 is a wasteful number, since it uses less digits than its factorization.

138925180388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34731295101 (or 34731295099 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 56.

The spelling of 138925180388 in words is "one hundred thirty-eight billion, nine hundred twenty-five million, one hundred eighty thousand, three hundred eighty-eight".