138389116 has 6 divisors (see below), whose sum is σ = 242180960. Its totient is φ = 69194556.

The previous prime is 138389113. The next prime is 138389143. The reversal of 138389116 is 611983831.

It is a super-2 number, since 2×138389116² = 38303094854522912, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138389113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17298636 + ... + 17298643.

Almost surely, 2^138389116 is an apocalyptic number.

It is an amenable number.

138389116 is a deficient number, since it is larger than the sum of its proper divisors (103791844).

138389116 is a wasteful number, since it uses less digits than its factorization.

138389116 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34597283 (or 34597281 counting only the distinct ones).

The product of its digits is 31104, while the sum is 40.

The square root of 138389116 is about 11763.8903429095. The cubic root of 138389116 is about 517.2501735477.

The spelling of 138389116 in words is "one hundred thirty-eight million, three hundred eighty-nine thousand, one hundred sixteen".