1379155964 has 12 divisors (see below), whose sum is σ = 2540550600. Its totient is φ = 653284368.

The previous prime is 1379155927. The next prime is 1379155997. The reversal of 1379155964 is 4695519731.

It is a congruent number.

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, 9073319 + ... + 9073470.

It is an arithmetic number, because the mean of its divisors is an integer number (211712550).

Almost surely, 2^1379155964 is an apocalyptic number.

It is an amenable number.

1379155964 is a deficient number, since it is larger than the sum of its proper divisors (1161394636).

1379155964 is a wasteful number, since it uses less digits than its factorization.

1379155964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18146812 (or 18146810 counting only the distinct ones).

The product of its digits is 1020600, while the sum is 50.

The square root of 1379155964 is about 37136.9891617508. The cubic root of 1379155964 is about 1113.1092555437.

The spelling of 1379155964 in words is "one billion, three hundred seventy-nine million, one hundred fifty-five thousand, nine hundred sixty-four".