1328992916 has 24 divisors (see below), whose sum is σ = 2388037344. Its totient is φ = 646803360.

The previous prime is 1328992913. The next prime is 1328992949. The reversal of 1328992916 is 6192998231.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1328992913) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37211 + ... + 63581.

It is an arithmetic number, because the mean of its divisors is an integer number (99501556).

Almost surely, 2^1328992916 is an apocalyptic number.

It is an amenable number.

1328992916 is a deficient number, since it is larger than the sum of its proper divisors (1059044428).

1328992916 is a wasteful number, since it uses less digits than its factorization.

1328992916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26711 (or 26709 counting only the distinct ones).

The product of its digits is 419904, while the sum is 50.

The square root of 1328992916 is about 36455.3551073090. The cubic root of 1328992916 is about 1099.4468061410.

The spelling of 1328992916 in words is "one billion, three hundred twenty-eight million, nine hundred ninety-two thousand, nine hundred sixteen".