2186166 has 16 divisors (see below), whose sum is σ = 4629744. Its totient is φ = 685824.

The previous prime is 2186141. The next prime is 2186189. The reversal of 2186166 is 6616812.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10615 + ... + 10818.

It is an arithmetic number, because the mean of its divisors is an integer number (289359).

2^2186166 is an apocalyptic number.

2186166 is an abundant number, since it is smaller than the sum of its proper divisors (2443578).

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

2186166 is a wasteful number, since it uses less digits than its factorization.

2186166 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21455.

The product of its digits is 3456, while the sum is 30.

The square root of 2186166 is about 1478.5689026894. The cubic root of 2186166 is about 129.7859594200.

The spelling of 2186166 in words is "two million, one hundred eighty-six thousand, one hundred sixty-six".