1164665644 has 24 divisors (see below), whose sum is σ = 2056596080. Its totient is φ = 577088064.

The previous prime is 1164665617. The next prime is 1164665669. The reversal of 1164665644 is 4465664611.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1164665644.

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, 240802 + ... + 245590.

Almost surely, 2^1164665644 is an apocalyptic number.

It is an amenable number.

1164665644 is a deficient number, since it is larger than the sum of its proper divisors (891930436).

1164665644 is a wasteful number, since it uses less digits than its factorization.

1164665644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5329 (or 5327 counting only the distinct ones).

The product of its digits is 414720, while the sum is 43.

The square root of 1164665644 is about 34127.1980097986. The cubic root of 1164665644 is about 1052.1243895284.

The spelling of 1164665644 in words is "one billion, one hundred sixty-four million, six hundred sixty-five thousand, six hundred forty-four".