1182809664 has 63 divisors (see below), whose sum is σ = 3392677873. Its totient is φ = 393994752.

The previous prime is 1182809651. The next prime is 1182809669. The reversal of 1182809664 is 4669082811.

The square root of 1182809664 is 34392.

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., 980942400 + 201867264 = 31320^2 + 14208^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1182809669) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 824692 + ... + 826124.

Almost surely, 2^1182809664 is an apocalyptic number.

1182809664 is the 34392-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1182809664

1182809664 is an abundant number, since it is smaller than the sum of its proper divisors (2209868209).

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

1182809664 is an frugal number, since it uses more digits than its factorization.

1182809664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2884 (or 1438 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The cubic root of 1182809664 is about 1057.5598504094.

The spelling of 1182809664 in words is "one billion, one hundred eighty-two million, eight hundred nine thousand, six hundred sixty-four".