138337608 has 32 divisors (see below), whose sum is σ = 354281760. Its totient is φ = 44987520.

The previous prime is 138337601. The next prime is 138337609. The reversal of 138337608 is 806733831.

138337608 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (138337601) 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, 69310 + ... + 71277.

It is an arithmetic number, because the mean of its divisors is an integer number (11071305).

Almost surely, 2^138337608 is an apocalyptic number.

It is an amenable number.

138337608 is an abundant number, since it is smaller than the sum of its proper divisors (215944152).

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

138337608 is a wasteful number, since it uses less digits than its factorization.

138337608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140637 (or 140633 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 138337608 is about 11761.7008974043. The cubic root of 138337608 is about 517.1859926140.

The spelling of 138337608 in words is "one hundred thirty-eight million, three hundred thirty-seven thousand, six hundred eight".