1391856796 has 24 divisors (see below), whose sum is σ = 2658693744. Its totient is φ = 632302080.

The previous prime is 1391856779. The next prime is 1391856803. The reversal of 1391856796 is 6976581931.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78796 + ... + 94828.

It is an arithmetic number, because the mean of its divisors is an integer number (110778906).

Almost surely, 2^1391856796 is an apocalyptic number.

It is an amenable number.

1391856796 is a deficient number, since it is larger than the sum of its proper divisors (1266836948).

1391856796 is a wasteful number, since it uses less digits than its factorization.

1391856796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18021 (or 18019 counting only the distinct ones).

The product of its digits is 2449440, while the sum is 55.

The square root of 1391856796 is about 37307.5970279513. The cubic root of 1391856796 is about 1116.5157439851.

The spelling of 1391856796 in words is "one billion, three hundred ninety-one million, eight hundred fifty-six thousand, seven hundred ninety-six".