1320758764 has 24 divisors (see below), whose sum is σ = 2635543008. Its totient is φ = 573722880.

The previous prime is 1320758753. The next prime is 1320758773. The reversal of 1320758764 is 4678570231.

It is a self number, because there is not a number n which added to its sum of digits gives 1320758764.

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, 746152 + ... + 747919.

It is an arithmetic number, because the mean of its divisors is an integer number (109814292).

Almost surely, 2^1320758764 is an apocalyptic number.

It is an amenable number.

1320758764 is a deficient number, since it is larger than the sum of its proper divisors (1314784244).

1320758764 is a wasteful number, since it uses less digits than its factorization.

1320758764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1494105 (or 1494103 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 43.

The square root of 1320758764 is about 36342.2448948878. The cubic root of 1320758764 is about 1097.1714557697.

The spelling of 1320758764 in words is "one billion, three hundred twenty million, seven hundred fifty-eight thousand, seven hundred sixty-four".