1166052645 has 16 divisors (see below), whose sum is σ = 2072982720. Its totient is φ = 621894672.

The previous prime is 1166052623. The next prime is 1166052649. The reversal of 1166052645 is 5462506611.

1166052645 is a `hidden beast` number, since 1 + 1 + 6 + 6 + 0 + 5 + 2 + 645 = 666.

It is not a de Polignac number, because 1166052645 - 2⁹ = 1166052133 is a prime.

It is a super-2 number, since 2×1166052645² = 2719357541822992050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1166052649) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 4318579 + ... + 4318848.

It is an arithmetic number, because the mean of its divisors is an integer number (129561420).

Almost surely, 2^1166052645 is an apocalyptic number.

1166052645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1166052645 is a deficient number, since it is larger than the sum of its proper divisors (906930075).

1166052645 is an equidigital number, since it uses as much as digits as its factorization.

1166052645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8637441 (or 8637435 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 1166052645 is about 34147.5130133953. The cubic root of 1166052645 is about 1052.5418823594.

The spelling of 1166052645 in words is "one billion, one hundred sixty-six million, fifty-two thousand, six hundred forty-five".