20166018 has 16 divisors (see below), whose sum is σ = 40473216. Its totient is φ = 6698480.

The previous prime is 20166001. The next prime is 20166053. The reversal of 20166018 is 81066102.

It is a Curzon 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, 3978 + ... + 7493.

It is an arithmetic number, because the mean of its divisors is an integer number (2529576).

Almost surely, 2^20166018 is an apocalyptic number.

20166018 is an abundant number, since it is smaller than the sum of its proper divisors (20307198).

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

20166018 is a wasteful number, since it uses less digits than its factorization.

20166018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11769.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 20166018 is about 4490.6589716878. The cubic root of 20166018 is about 272.1907633105.

The spelling of 20166018 in words is "twenty million, one hundred sixty-six thousand, eighteen".