1329431568 has 80 divisors (see below), whose sum is σ = 3471206400. Its totient is φ = 438421120.

The previous prime is 1329431531. The next prime is 1329431573. The reversal of 1329431568 is 8651349231.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3084313 + ... + 3084743.

It is an arithmetic number, because the mean of its divisors is an integer number (43390080).

Almost surely, 2^1329431568 is an apocalyptic number.

It is an amenable number.

1329431568 is an abundant number, since it is smaller than the sum of its proper divisors (2141774832).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1329431568 is a wasteful number, since it uses less digits than its factorization.

1329431568 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 980 (or 974 counting only the distinct ones).

The product of its digits is 155520, while the sum is 42.

The square root of 1329431568 is about 36461.3709012703. The cubic root of 1329431568 is about 1099.5677552406.

The spelling of 1329431568 in words is "one billion, three hundred twenty-nine million, four hundred thirty-one thousand, five hundred sixty-eight".