3138639376 has 20 divisors (see below), whose sum is σ = 6290808300. Its totient is φ = 1515204992.

The previous prime is 3138639323. The next prime is 3138639389. The reversal of 3138639376 is 6739368313.

It can be written as a sum of positive squares in 2 ways, for example, as 1261670400 + 1876968976 = 35520^2 + 43324^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3381691 + ... + 3382618.

It is an arithmetic number, because the mean of its divisors is an integer number (314540415).

Almost surely, 2^3138639376 is an apocalyptic number.

It is an amenable number.

3138639376 is an abundant number, since it is smaller than the sum of its proper divisors (3152168924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3138639376 is a wasteful number, since it uses less digits than its factorization.

3138639376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6764346 (or 6764340 counting only the distinct ones).

The product of its digits is 1469664, while the sum is 49.

The square root of 3138639376 is about 56023.5609007496. The cubic root of 3138639376 is about 1464.1328101717.

The spelling of 3138639376 in words is "three billion, one hundred thirty-eight million, six hundred thirty-nine thousand, three hundred seventy-six".