1166545404 has 36 divisors (see below), whose sum is σ = 2998752120. Its totient is φ = 382257120.

The previous prime is 1166545403. The next prime is 1166545427. The reversal of 1166545404 is 4045456611.

1166545404 is a `hidden beast` number, since 1 + 1 + 66 + 54 + 540 + 4 = 666.

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 not an unprimeable number, because it can be changed into a prime (1166545403) 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 11 ways as a sum of consecutive naturals, for example, 272487 + ... + 276734.

It is an arithmetic number, because the mean of its divisors is an integer number (83298670).

Almost surely, 2^1166545404 is an apocalyptic number.

It is an amenable number.

1166545404 is an abundant number, since it is smaller than the sum of its proper divisors (1832206716).

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

1166545404 is a wasteful number, since it uses less digits than its factorization.

1166545404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549290 (or 549285 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 1166545404 is about 34154.7274033918. The cubic root of 1166545404 is about 1052.6901250786.

The spelling of 1166545404 in words is "one billion, one hundred sixty-six million, five hundred forty-five thousand, four hundred four".