1379278316 has 12 divisors (see below), whose sum is σ = 2599409232. Its totient is φ = 636589968.

The previous prime is 1379278247. The next prime is 1379278331. The reversal of 1379278316 is 6138729731.

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, 13262240 + ... + 13262343.

It is an arithmetic number, because the mean of its divisors is an integer number (216617436).

Almost surely, 2^1379278316 is an apocalyptic number.

It is an amenable number.

1379278316 is a deficient number, since it is larger than the sum of its proper divisors (1220130916).

1379278316 is a wasteful number, since it uses less digits than its factorization.

1379278316 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26524600 (or 26524598 counting only the distinct ones).

The product of its digits is 381024, while the sum is 47.

The square root of 1379278316 is about 37138.6364316193. The cubic root of 1379278316 is about 1113.1421711143.

The spelling of 1379278316 in words is "one billion, three hundred seventy-nine million, two hundred seventy-eight thousand, three hundred sixteen".