1328978968 has 16 divisors (see below), whose sum is σ = 2493449280. Its totient is φ = 664059168.

The previous prime is 1328978957. The next prime is 1328978999. The reversal of 1328978968 is 8698798231.

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, 40471 + ... + 65542.

It is an arithmetic number, because the mean of its divisors is an integer number (155840580).

Almost surely, 2^1328978968 is an apocalyptic number.

It is an amenable number.

1328978968 is a deficient number, since it is larger than the sum of its proper divisors (1164470312).

1328978968 is a wasteful number, since it uses less digits than its factorization.

1328978968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107586 (or 107582 counting only the distinct ones).

The product of its digits is 10450944, while the sum is 61.

The square root of 1328978968 is about 36455.1638043227. The cubic root of 1328978968 is about 1099.4429598357.

The spelling of 1328978968 in words is "one billion, three hundred twenty-eight million, nine hundred seventy-eight thousand, nine hundred sixty-eight".