138696930867 has 30 divisors (see below), whose sum is σ = 203535440940. Its totient is φ = 84011442240.

The previous prime is 138696930857. The next prime is 138696930877. The reversal of 138696930867 is 768039696831.

138696930867 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (138696930857) and next prime (138696930877).

It is not a de Polignac number, because 138696930867 - 2⁶ = 138696930803 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 138696930798 and 138696930807.

It is not an unprimeable number, because it can be changed into a prime (138696930857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 78050283 + ... + 78052059.

It is an arithmetic number, because the mean of its divisors is an integer number (6784514698).

Almost surely, 2^138696930867 is an apocalyptic number.

138696930867 is a deficient number, since it is larger than the sum of its proper divisors (64838510073).

138696930867 is an frugal number, since it uses more digits than its factorization.

138696930867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3601 (or 1791 counting only the distinct ones).

The product of its (nonzero) digits is 70543872, while the sum is 66.

The spelling of 138696930867 in words is "one hundred thirty-eight billion, six hundred ninety-six million, nine hundred thirty thousand, eight hundred sixty-seven".