1166775812 has 6 divisors (see below), whose sum is σ = 2041857678. Its totient is φ = 583387904.

The previous prime is 1166775811. The next prime is 1166775817. The reversal of 1166775812 is 2185776611.

It can be written as a sum of positive squares in only one way, i.e., 1085307136 + 81468676 = 32944^2 + 9026^2 .

It is a super-2 number, since 2×1166775812² = 2722731590936518688, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1166775811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 145846973 + ... + 145846980.

It is an arithmetic number, because the mean of its divisors is an integer number (340309613).

Almost surely, 2^1166775812 is an apocalyptic number.

It is an amenable number.

1166775812 is a deficient number, since it is larger than the sum of its proper divisors (875081866).

1166775812 is a wasteful number, since it uses less digits than its factorization.

1166775812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291693957 (or 291693955 counting only the distinct ones).

The product of its digits is 141120, while the sum is 44.

The square root of 1166775812 is about 34158.1002399138. The cubic root of 1166775812 is about 1052.7594272130.

The spelling of 1166775812 in words is "one billion, one hundred sixty-six million, seven hundred seventy-five thousand, eight hundred twelve".