3879655138 has 16 divisors (see below), whose sum is σ = 5950506240. Its totient is φ = 1896253216.

The previous prime is 3879655123. The next prime is 3879655147. The reversal of 3879655138 is 8315569783.

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, 54270 + ... + 103462.

It is an arithmetic number, because the mean of its divisors is an integer number (371906640).

Almost surely, 2^3879655138 is an apocalyptic number.

3879655138 is a deficient number, since it is larger than the sum of its proper divisors (2070851102).

3879655138 is a wasteful number, since it uses less digits than its factorization.

3879655138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50081.

The product of its digits is 5443200, while the sum is 55.

The square root of 3879655138 is about 62286.8777352020. The cubic root of 3879655138 is about 1571.3190448394.

The spelling of 3879655138 in words is "three billion, eight hundred seventy-nine million, six hundred fifty-five thousand, one hundred thirty-eight".