138508175 has 18 divisors (see below), whose sum is σ = 185983632. Its totient is φ = 102279840.

The previous prime is 138508169. The next prime is 138508189. The reversal of 138508175 is 571805831.

138508175 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 138508175 - 2¹⁶ = 138442639 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 12167 + ... + 20616.

It is an arithmetic number, because the mean of its divisors is an integer number (10332424).

Almost surely, 2^138508175 is an apocalyptic number.

138508175 is a deficient number, since it is larger than the sum of its proper divisors (47475457).

138508175 is a wasteful number, since it uses less digits than its factorization.

138508175 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32819 (or 32801 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 38.

The square root of 138508175 is about 11768.9496132833. The cubic root of 138508175 is about 517.3984646807.

The spelling of 138508175 in words is "one hundred thirty-eight million, five hundred eight thousand, one hundred seventy-five".