1296918764 has 6 divisors (see below), whose sum is σ = 2269607844. Its totient is φ = 648459380.

The previous prime is 1296918761. The next prime is 1296918811. The reversal of 1296918764 is 4678196921.

It is not an unprimeable number, because it can be changed into a prime (1296918761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162114842 + ... + 162114849.

It is an arithmetic number, because the mean of its divisors is an integer number (378267974).

Almost surely, 2^1296918764 is an apocalyptic number.

It is an amenable number.

1296918764 is a deficient number, since it is larger than the sum of its proper divisors (972689080).

1296918764 is a wasteful number, since it uses less digits than its factorization.

1296918764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324229695 (or 324229693 counting only the distinct ones).

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

The square root of 1296918764 is about 36012.7583503402. The cubic root of 1296918764 is about 1090.5299344991.

The spelling of 1296918764 in words is "one billion, two hundred ninety-six million, nine hundred eighteen thousand, seven hundred sixty-four".