138634682793 has 8 divisors (see below), whose sum is σ = 184854900000. Its totient is φ = 92418793728.

The previous prime is 138634682779. The next prime is 138634682821. The reversal of 138634682793 is 397286436831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 138634682793 - 2⁴ = 138634682777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138634682093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1006543 + ... + 1135956.

It is an arithmetic number, because the mean of its divisors is an integer number (23106862500).

Almost surely, 2^138634682793 is an apocalyptic number.

It is an amenable number.

138634682793 is a deficient number, since it is larger than the sum of its proper divisors (46220217207).

138634682793 is a wasteful number, since it uses less digits than its factorization.

138634682793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2164071.

The product of its digits is 31352832, while the sum is 60.

The spelling of 138634682793 in words is "one hundred thirty-eight billion, six hundred thirty-four million, six hundred eighty-two thousand, seven hundred ninety-three".