138532374 has 12 divisors (see below), whose sum is σ = 300153516. Its totient is φ = 46177452.

The previous prime is 138532367. The next prime is 138532411. The reversal of 138532374 is 473235831.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3848104 + ... + 3848139.

It is an arithmetic number, because the mean of its divisors is an integer number (25012793).

Almost surely, 2^138532374 is an apocalyptic number.

138532374 is an abundant number, since it is smaller than the sum of its proper divisors (161621142).

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

138532374 is a wasteful number, since it uses less digits than its factorization.

138532374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7696251 (or 7696248 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 138532374 is about 11769.9776550340. The cubic root of 138532374 is about 517.4285947828.

The spelling of 138532374 in words is "one hundred thirty-eight million, five hundred thirty-two thousand, three hundred seventy-four".