138955168 has 24 divisors (see below), whose sum is σ = 298438560. Its totient is φ = 63161280.

The previous prime is 138955163. The next prime is 138955169. The reversal of 138955168 is 861559831.

138955168 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (138955163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 197028 + ... + 197731.

It is an arithmetic number, because the mean of its divisors is an integer number (12434940).

Almost surely, 2^138955168 is an apocalyptic number.

It is an amenable number.

138955168 is an abundant number, since it is smaller than the sum of its proper divisors (159483392).

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

138955168 is a wasteful number, since it uses less digits than its factorization.

138955168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394780 (or 394772 counting only the distinct ones).

The product of its digits is 259200, while the sum is 46.

The square root of 138955168 is about 11787.9246689144. The cubic root of 138955168 is about 517.9544490687.

The spelling of 138955168 in words is "one hundred thirty-eight million, nine hundred fifty-five thousand, one hundred sixty-eight".