138074975 has 6 divisors (see below), whose sum is σ = 171213000. Its totient is φ = 110459960.

The previous prime is 138074971. The next prime is 138074977. The reversal of 138074975 is 579470831.

It is not a de Polignac number, because 138074975 - 2² = 138074971 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138074971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2761475 + ... + 2761524.

It is an arithmetic number, because the mean of its divisors is an integer number (28535500).

Almost surely, 2^138074975 is an apocalyptic number.

138074975 is a deficient number, since it is larger than the sum of its proper divisors (33138025).

138074975 is an equidigital number, since it uses as much as digits as its factorization.

138074975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5523009 (or 5523004 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 44.

The square root of 138074975 is about 11750.5308390728. The cubic root of 138074975 is about 516.8584939219.

The spelling of 138074975 in words is "one hundred thirty-eight million, seventy-four thousand, nine hundred seventy-five".