138000908 has 24 divisors (see below), whose sum is σ = 252655200. Its totient is φ = 65867648.

The previous prime is 138000901. The next prime is 138000931. The reversal of 138000908 is 809000831.

It is a happy number.

138000908 is digitally balanced in base 3 and base 9, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (29).

138000908 is strictly pandigital in base 9.

It is not an unprimeable number, because it can be changed into a prime (138000901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3641 + ... + 17007.

It is an arithmetic number, because the mean of its divisors is an integer number (10527300).

Almost surely, 2^138000908 is an apocalyptic number.

It is an amenable number.

138000908 is a deficient number, since it is larger than the sum of its proper divisors (114654292).

138000908 is a wasteful number, since it uses less digits than its factorization.

138000908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13489 (or 13487 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 138000908 is about 11747.3787714537. The cubic root of 138000908 is about 516.7660586217.

The spelling of 138000908 in words is "one hundred thirty-eight million, nine hundred eight", and thus it is an aban number.