1379155965 has 16 divisors (see below), whose sum is σ = 2407254336. Its totient is φ = 668681600.

The previous prime is 1379155927. The next prime is 1379155997. The reversal of 1379155965 is 5695519731.

It is not a de Polignac number, because 1379155965 - 2⁸ = 1379155709 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4179096 + ... + 4179425.

It is an arithmetic number, because the mean of its divisors is an integer number (150453396).

Almost surely, 2^1379155965 is an apocalyptic number.

1379155965 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1379155965 is a deficient number, since it is larger than the sum of its proper divisors (1028098371).

1379155965 is a wasteful number, since it uses less digits than its factorization.

1379155965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8358540.

The product of its digits is 1275750, while the sum is 51.

The square root of 1379155965 is about 37136.9891752145. The cubic root of 1379155965 is about 1113.1092558127.

The spelling of 1379155965 in words is "one billion, three hundred seventy-nine million, one hundred fifty-five thousand, nine hundred sixty-five".