1164555256 has 32 divisors (see below), whose sum is σ = 2199772080. Its totient is φ = 577964800.

The previous prime is 1164555253. The next prime is 1164555263. The reversal of 1164555256 is 6525554611.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1164555253) 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 7 ways as a sum of consecutive naturals, for example, 1198851 + ... + 1199821.

Almost surely, 2^1164555256 is an apocalyptic number.

It is an amenable number.

1164555256 is a deficient number, since it is larger than the sum of its proper divisors (1035216824).

1164555256 is a wasteful number, since it uses less digits than its factorization.

1164555256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1935 (or 1931 counting only the distinct ones).

The product of its digits is 180000, while the sum is 40.

The square root of 1164555256 is about 34125.5806690524. The cubic root of 1164555256 is about 1052.0911480635.

The spelling of 1164555256 in words is "one billion, one hundred sixty-four million, five hundred fifty-five thousand, two hundred fifty-six".