5646391166 has 16 divisors (see below), whose sum is σ = 9122332128. Its totient is φ = 2605672800.

The previous prime is 5646391159. The next prime is 5646391183. The reversal of 5646391166 is 6611936465.

It is a self number, because there is not a number n which added to its sum of digits gives 5646391166.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 362111 + ... + 377381.

It is an arithmetic number, because the mean of its divisors is an integer number (570145758).

Almost surely, 2^5646391166 is an apocalyptic number.

5646391166 is a deficient number, since it is larger than the sum of its proper divisors (3475940962).

5646391166 is a wasteful number, since it uses less digits than its factorization.

5646391166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29507.

The product of its digits is 699840, while the sum is 47.

The square root of 5646391166 is about 75142.4724506720. The cubic root of 5646391166 is about 1780.6982033491.

The spelling of 5646391166 in words is "five billion, six hundred forty-six million, three hundred ninety-one thousand, one hundred sixty-six".