2109166 has 4 divisors (see below), whose sum is σ = 3163752. Its totient is φ = 1054582.

The previous prime is 2109161. The next prime is 2109167. The reversal of 2109166 is 6619012.

2109166 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a self number, because there is not a number n which added to its sum of digits gives 2109166.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2109161) 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 as a sum of consecutive naturals, namely, 527290 + ... + 527293.

It is an arithmetic number, because the mean of its divisors is an integer number (790938).

2^2109166 is an apocalyptic number.

2109166 is a deficient number, since it is larger than the sum of its proper divisors (1054586).

2109166 is a wasteful number, since it uses less digits than its factorization.

2109166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1054585.

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 2109166 is about 1452.2968016215. The cubic root of 2109166 is about 128.2439601871.

The spelling of 2109166 in words is "two million, one hundred nine thousand, one hundred sixty-six".