18668840214 has 32 divisors (see below), whose sum is σ = 37431797760. Its totient is φ = 6207280992.

The previous prime is 18668840209. The next prime is 18668840227. The reversal of 18668840214 is 41204886681.

It is a happy number.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8233909 + ... + 8236175.

It is an arithmetic number, because the mean of its divisors is an integer number (1169743680).

Almost surely, 2^18668840214 is an apocalyptic number.

18668840214 is an abundant number, since it is smaller than the sum of its proper divisors (18762957546).

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

18668840214 is a wasteful number, since it uses less digits than its factorization.

18668840214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5124.

The product of its (nonzero) digits is 589824, while the sum is 48.

The spelling of 18668840214 in words is "eighteen billion, six hundred sixty-eight million, eight hundred forty thousand, two hundred fourteen".