38629721879 has 12 divisors (see below), whose sum is σ = 45030456000. Its totient is φ = 33042044448.

The previous prime is 38629721833. The next prime is 38629721887. The reversal of 38629721879 is 97812792683.

It is not a de Polignac number, because 38629721879 - 2²⁸ = 38361286423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38629721279) 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 11 ways as a sum of consecutive naturals, for example, 799454 + ... + 846395.

It is an arithmetic number, because the mean of its divisors is an integer number (3752538000).

Almost surely, 2^38629721879 is an apocalyptic number.

38629721879 is a deficient number, since it is larger than the sum of its proper divisors (6400734121).

38629721879 is a wasteful number, since it uses less digits than its factorization.

38629721879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1646342 (or 1646335 counting only the distinct ones).

The product of its digits is 18289152, while the sum is 62.

The spelling of 38629721879 in words is "thirty-eight billion, six hundred twenty-nine million, seven hundred twenty-one thousand, eight hundred seventy-nine".