1323986564 has 24 divisors (see below), whose sum is σ = 2393438208. Its totient is φ = 640177920.

The previous prime is 1323986549. The next prime is 1323986581. The reversal of 1323986564 is 4656893231.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223124 + ... + 228980.

It is an arithmetic number, because the mean of its divisors is an integer number (99726592).

Almost surely, 2^1323986564 is an apocalyptic number.

It is an amenable number.

1323986564 is a deficient number, since it is larger than the sum of its proper divisors (1069451644).

1323986564 is a wasteful number, since it uses less digits than its factorization.

1323986564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7715 (or 7713 counting only the distinct ones).

The product of its digits is 933120, while the sum is 47.

The square root of 1323986564 is about 36386.6261695145. The cubic root of 1323986564 is about 1098.0645204360.

The spelling of 1323986564 in words is "one billion, three hundred twenty-three million, nine hundred eighty-six thousand, five hundred sixty-four".