2166009164 has 12 divisors (see below), whose sum is σ = 4135108488. Its totient is φ = 984549600.

The previous prime is 2166009163. The next prime is 2166009169. The reversal of 2166009164 is 4619006612.

It is not an unprimeable number, because it can be changed into a prime (2166009163) 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 3 ways as a sum of consecutive naturals, for example, 24613697 + ... + 24613784.

It is an arithmetic number, because the mean of its divisors is an integer number (344592374).

Almost surely, 2^2166009164 is an apocalyptic number.

It is an amenable number.

2166009164 is a deficient number, since it is larger than the sum of its proper divisors (1969099324).

2166009164 is a wasteful number, since it uses less digits than its factorization.

2166009164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49227496 (or 49227494 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 2166009164 is about 46540.4035650745. The cubic root of 2166009164 is about 1293.8584403367.

The spelling of 2166009164 in words is "two billion, one hundred sixty-six million, nine thousand, one hundred sixty-four".