138840614 has 16 divisors (see below), whose sum is σ = 229208400. Its totient is φ = 62549760.

The previous prime is 138840607. The next prime is 138840707. The reversal of 138840614 is 416048831.

138840614 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25439 + ... + 30410.

It is an arithmetic number, because the mean of its divisors is an integer number (14325525).

Almost surely, 2^138840614 is an apocalyptic number.

138840614 is a deficient number, since it is larger than the sum of its proper divisors (90367786).

138840614 is a wasteful number, since it uses less digits than its factorization.

138840614 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55975.

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 138840614 is about 11783.0647116953. The cubic root of 138840614 is about 517.8120768511.

The spelling of 138840614 in words is "one hundred thirty-eight million, eight hundred forty thousand, six hundred fourteen".