1166564133 has 32 divisors (see below), whose sum is σ = 1978553600. Its totient is φ = 665454528.

The previous prime is 1166564059. The next prime is 1166564137. The reversal of 1166564133 is 3314656611.

1166564133 is a `hidden beast` number, since 1 + 1 + 6 + 6 + 5 + 641 + 3 + 3 = 666.

It is not a de Polignac number, because 1166564133 - 2⁸ = 1166563877 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166564137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 110823 + ... + 120891.

It is an arithmetic number, because the mean of its divisors is an integer number (61829800).

Almost surely, 2^1166564133 is an apocalyptic number.

It is an amenable number.

1166564133 is a deficient number, since it is larger than the sum of its proper divisors (811989467).

1166564133 is a wasteful number, since it uses less digits than its factorization.

1166564133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10698 (or 10692 counting only the distinct ones).

The product of its digits is 38880, while the sum is 36.

The square root of 1166564133 is about 34155.0015810276. The cubic root of 1166564133 is about 1052.6957587292.

The spelling of 1166564133 in words is "one billion, one hundred sixty-six million, five hundred sixty-four thousand, one hundred thirty-three".