1321968376 has 8 divisors (see below), whose sum is σ = 2478690720. Its totient is φ = 660984184.

The previous prime is 1321968341. The next prime is 1321968391. The reversal of 1321968376 is 6738691231.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

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 as a sum of consecutive naturals, namely, 82623016 + ... + 82623031.

It is an arithmetic number, because the mean of its divisors is an integer number (309836340).

Almost surely, 2^1321968376 is an apocalyptic number.

It is an amenable number.

1321968376 is a deficient number, since it is larger than the sum of its proper divisors (1156722344).

1321968376 is a wasteful number, since it uses less digits than its factorization.

1321968376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165246053 (or 165246049 counting only the distinct ones).

The product of its digits is 326592, while the sum is 46.

The square root of 1321968376 is about 36358.8830411497. The cubic root of 1321968376 is about 1097.5063003670.

The spelling of 1321968376 in words is "one billion, three hundred twenty-one million, nine hundred sixty-eight thousand, three hundred seventy-six".