18868966 has 16 divisors (see below), whose sum is σ = 29548800. Its totient is φ = 9025408.

The previous prime is 18868961. The next prime is 18868973. The reversal of 18868966 is 66986881.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18868961) 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, 5115 + ... + 7993.

It is an arithmetic number, because the mean of its divisors is an integer number (1846800).

Almost surely, 2^18868966 is an apocalyptic number.

18868966 is a deficient number, since it is larger than the sum of its proper divisors (10679834).

18868966 is a wasteful number, since it uses less digits than its factorization.

18868966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3023.

The product of its digits is 995328, while the sum is 52.

The square root of 18868966 is about 4343.8423083717. The cubic root of 18868966 is about 266.2253258744.

The spelling of 18868966 in words is "eighteen million, eight hundred sixty-eight thousand, nine hundred sixty-six".