138914958239 has 16 divisors (see below), whose sum is σ = 145805433600. Its totient is φ = 132096324096.

The previous prime is 138914958211. The next prime is 138914958251. The reversal of 138914958239 is 932859419831.

It is a cyclic number.

It is not a de Polignac number, because 138914958239 - 2²⁰ = 138913909663 is a prime.

It is a super-2 number, since 2×138914958239² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138914958269) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6999272 + ... + 7019090.

It is an arithmetic number, because the mean of its divisors is an integer number (9112839600).

Almost surely, 2^138914958239 is an apocalyptic number.

138914958239 is a deficient number, since it is larger than the sum of its proper divisors (6890475361).

138914958239 is a wasteful number, since it uses less digits than its factorization.

138914958239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21614.

The product of its digits is 16796160, while the sum is 62.

The spelling of 138914958239 in words is "one hundred thirty-eight billion, nine hundred fourteen million, nine hundred fifty-eight thousand, two hundred thirty-nine".