2166650166 has 16 divisors (see below), whose sum is σ = 4438991088. Its totient is φ = 704601600.

The previous prime is 2166650141. The next prime is 2166650179. The reversal of 2166650166 is 6610566612.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 4403515 + ... + 4404006.

It is an arithmetic number, because the mean of its divisors is an integer number (277436943).

Almost surely, 2^2166650166 is an apocalyptic number.

2166650166 is an abundant number, since it is smaller than the sum of its proper divisors (2272340922).

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

2166650166 is a wasteful number, since it uses less digits than its factorization.

2166650166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8807567.

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 2166650166 is about 46547.2895666332. The cubic root of 2166650166 is about 1293.9860612261.

The spelling of 2166650166 in words is "two billion, one hundred sixty-six million, six hundred fifty thousand, one hundred sixty-six".