1279516976 has 10 divisors (see below), whose sum is σ = 2479064172. Its totient is φ = 639758480.

The previous prime is 1279516963. The next prime is 1279517003. The reversal of 1279516976 is 6796159721.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39984890 + ... + 39984921.

Almost surely, 2^1279516976 is an apocalyptic number.

1279516976 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1279516976 is a deficient number, since it is larger than the sum of its proper divisors (1199547196).

1279516976 is an equidigital number, since it uses as much as digits as its factorization.

1279516976 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79969819 (or 79969813 counting only the distinct ones).

The product of its digits is 1428840, while the sum is 53.

The square root of 1279516976 is about 35770.3365374160. The cubic root of 1279516976 is about 1085.6304535324.

The spelling of 1279516976 in words is "one billion, two hundred seventy-nine million, five hundred sixteen thousand, nine hundred seventy-six".