1299716864 has 36 divisors (see below), whose sum is σ = 2596718040. Its totient is φ = 649267200.

The previous prime is 1299716863. The next prime is 1299716879. The reversal of 1299716864 is 4686179921.

It is not an unprimeable number, because it can be changed into a prime (1299716863) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 459647 + ... + 462465.

Almost surely, 2^1299716864 is an apocalyptic number.

It is an amenable number.

1299716864 is a deficient number, since it is larger than the sum of its proper divisors (1297001176).

1299716864 is an equidigital number, since it uses as much as digits as its factorization.

1299716864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4636 (or 4622 counting only the distinct ones).

The product of its digits is 1306368, while the sum is 53.

The square root of 1299716864 is about 36051.5861509587. The cubic root of 1299716864 is about 1091.3136433042.

The spelling of 1299716864 in words is "one billion, two hundred ninety-nine million, seven hundred sixteen thousand, eight hundred sixty-four".