1329820964 has 12 divisors (see below), whose sum is σ = 2332879500. Its totient is φ = 663283968.

The previous prime is 1329820957. The next prime is 1329820997. The reversal of 1329820964 is 4690289231.

It can be written as a sum of positive squares in 2 ways, for example, as 1062760000 + 267060964 = 32600^2 + 16342^2 .

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, 404789 + ... + 408060.

It is an arithmetic number, because the mean of its divisors is an integer number (194406625).

Almost surely, 2^1329820964 is an apocalyptic number.

It is an amenable number.

1329820964 is a deficient number, since it is larger than the sum of its proper divisors (1003058536).

1329820964 is a wasteful number, since it uses less digits than its factorization.

1329820964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 813262 (or 813260 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 44.

The square root of 1329820964 is about 36466.7103534169. The cubic root of 1329820964 is about 1099.6751007405.

The spelling of 1329820964 in words is "one billion, three hundred twenty-nine million, eight hundred twenty thousand, nine hundred sixty-four".