138063508 has 24 divisors (see below), whose sum is σ = 264386304. Its totient is φ = 62563200.

The previous prime is 138063493. The next prime is 138063509. The reversal of 138063508 is 805360831.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138063509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10173 + ... + 19483.

It is an arithmetic number, because the mean of its divisors is an integer number (11016096).

Almost surely, 2^138063508 is an apocalyptic number.

It is an amenable number.

138063508 is a deficient number, since it is larger than the sum of its proper divisors (126322796).

138063508 is a wasteful number, since it uses less digits than its factorization.

138063508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9663 (or 9661 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 138063508 is about 11750.0428935387. The cubic root of 138063508 is about 516.8441853179.

The spelling of 138063508 in words is "one hundred thirty-eight million, sixty-three thousand, five hundred eight".