1166550804 has 36 divisors (see below), whose sum is σ = 2989182196. Its totient is φ = 383522688.

The previous prime is 1166550799. The next prime is 1166550821. The reversal of 1166550804 is 4080556611.

It can be written as a sum of positive squares in 2 ways, for example, as 351562500 + 814988304 = 18750^2 + 28548^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 219319 + ... + 224574.

Almost surely, 2^1166550804 is an apocalyptic number.

It is an amenable number.

1166550804 is an abundant number, since it is smaller than the sum of its proper divisors (1822631392).

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

1166550804 is a wasteful number, since it uses less digits than its factorization.

1166550804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 443976 (or 443971 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 36.

The square root of 1166550804 is about 34154.8064553146. The cubic root of 1166550804 is about 1052.6917493954.

The spelling of 1166550804 in words is "one billion, one hundred sixty-six million, five hundred fifty thousand, eight hundred four".