12166818 has 16 divisors (see below), whose sum is σ = 25118976. Its totient is φ = 3924720.

The previous prime is 12166813. The next prime is 12166841. The reversal of 12166818 is 81866121.

12166818 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (12166811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32521 + ... + 32892.

It is an arithmetic number, because the mean of its divisors is an integer number (1569936).

Almost surely, 2^12166818 is an apocalyptic number.

12166818 is an abundant number, since it is smaller than the sum of its proper divisors (12952158).

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

12166818 is a wasteful number, since it uses less digits than its factorization.

12166818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65449.

The product of its digits is 4608, while the sum is 33.

The square root of 12166818 is about 3488.0966156344. The cubic root of 12166818 is about 229.9988531764.

The spelling of 12166818 in words is "twelve million, one hundred sixty-six thousand, eight hundred eighteen".