138364974 has 48 divisors (see below), whose sum is σ = 338335920. Its totient is φ = 40481280.

The previous prime is 138364969. The next prime is 138365009. The reversal of 138364974 is 479463831.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 6307 + ... + 17790.

It is an arithmetic number, because the mean of its divisors is an integer number (7048665).

Almost surely, 2^138364974 is an apocalyptic number.

138364974 is an abundant number, since it is smaller than the sum of its proper divisors (199970946).

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

138364974 is a wasteful number, since it uses less digits than its factorization.

138364974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24145 (or 24142 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 138364974 is about 11762.8641920240. The cubic root of 138364974 is about 517.2200936776.

The spelling of 138364974 in words is "one hundred thirty-eight million, three hundred sixty-four thousand, nine hundred seventy-four".