1320920968 has 16 divisors (see below), whose sum is σ = 2478937500. Its totient is φ = 659870976.

The previous prime is 1320920959. The next prime is 1320920977. The reversal of 1320920968 is 8690290231.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1320920959) and next prime (1320920977).

It can be written as a sum of positive squares in 2 ways, for example, as 1319287684 + 1633284 = 36322^2 + 1278^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1320920968.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64093 + ... + 82156.

Almost surely, 2^1320920968 is an apocalyptic number.

It is an amenable number.

1320920968 is a deficient number, since it is larger than the sum of its proper divisors (1158016532).

1320920968 is a wasteful number, since it uses less digits than its factorization.

1320920968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147384 (or 147380 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 1320920968 is about 36344.4764441586. The cubic root of 1320920968 is about 1097.2163689209.

The spelling of 1320920968 in words is "one billion, three hundred twenty million, nine hundred twenty thousand, nine hundred sixty-eight".