3138279507 has 24 divisors (see below), whose sum is σ = 4948107840. Its totient is φ = 1900856880.

The previous prime is 3138279493. The next prime is 3138279527. The reversal of 3138279507 is 7059728313.

It is a happy number.

3138279507 is a `hidden beast` number, since 3 + 138 + 2 + 7 + 9 + 507 = 666.

3138279507 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3138279507 - 2⁴ = 3138279491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3138279527) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 176344 + ... + 193322.

It is an arithmetic number, because the mean of its divisors is an integer number (206171160).

Almost surely, 2^3138279507 is an apocalyptic number.

3138279507 is a deficient number, since it is larger than the sum of its proper divisors (1809828333).

3138279507 is a wasteful number, since it uses less digits than its factorization.

3138279507 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18863 (or 18860 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 45.

The square root of 3138279507 is about 56020.3490438965. The cubic root of 3138279507 is about 1464.0768500261.

It can be divided in two parts, 31382 and 79507, that added together give a square (110889 = 333²).

The spelling of 3138279507 in words is "three billion, one hundred thirty-eight million, two hundred seventy-nine thousand, five hundred seven".