138068375 has 32 divisors (see below), whose sum is σ = 178993152. Its totient is φ = 106260000.

The previous prime is 138068363. The next prime is 138068377. The reversal of 138068375 is 573860831.

It is not a de Polignac number, because 138068375 - 2¹⁰ = 138067351 is a prime.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138068377) 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 31 ways as a sum of consecutive naturals, for example, 416960 + ... + 417290.

It is an arithmetic number, because the mean of its divisors is an integer number (5593536).

Almost surely, 2^138068375 is an apocalyptic number.

138068375 is a deficient number, since it is larger than the sum of its proper divisors (40924777).

138068375 is an equidigital number, since it uses as much as digits as its factorization.

138068375 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 464 (or 454 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 138068375 is about 11750.2499973405. The cubic root of 138068375 is about 516.8502584918.

The spelling of 138068375 in words is "one hundred thirty-eight million, sixty-eight thousand, three hundred seventy-five".