1320911668 has 12 divisors (see below), whose sum is σ = 2365353760. Its totient is φ = 645096312.

The previous prime is 1320911623. The next prime is 1320911681. The reversal of 1320911668 is 8661190231.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3839688 + ... + 3840031.

Almost surely, 2^1320911668 is an apocalyptic number.

It is an amenable number.

1320911668 is a deficient number, since it is larger than the sum of its proper divisors (1044442092).

1320911668 is a wasteful number, since it uses less digits than its factorization.

1320911668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7679766 (or 7679764 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 1320911668 is about 36344.3485015208. The cubic root of 1320911668 is about 1097.2137939154.

The spelling of 1320911668 in words is "one billion, three hundred twenty million, nine hundred eleven thousand, six hundred sixty-eight".