1329185764 has 9 divisors (see below), whose sum is σ = 2326202697. Its totient is φ = 664556424.

The previous prime is 1329185761. The next prime is 1329185773. The reversal of 1329185764 is 4675819231.

The square root of 1329185764 is 36458.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 1328019364 + 1166400 = 36442^2 + 1080^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1329185761) by changing a digit.

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 in 2 ways as a sum of consecutive naturals, for example, 63802 + ... + 82030.

Almost surely, 2^1329185764 is an apocalyptic number.

1329185764 is the 36458-th square number.

It is an amenable number.

1329185764 is a deficient number, since it is larger than the sum of its proper divisors (997016933).

1329185764 is an frugal number, since it uses more digits than its factorization.

1329185764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36462 (or 18231 counting only the distinct ones).

The product of its digits is 362880, while the sum is 46.

The cubic root of 1329185764 is about 1099.4999832148.

The spelling of 1329185764 in words is "one billion, three hundred twenty-nine million, one hundred eighty-five thousand, seven hundred sixty-four".