218323814 has 16 divisors (see below), whose sum is σ = 337677120. Its totient is φ = 105803880.

The previous prime is 218323799. The next prime is 218323823. The reversal of 218323814 is 418323812.

218323814 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an alternating number because its digits alternate between even and odd.

It is a congruent 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, 1577 + ... + 20955.

It is an arithmetic number, because the mean of its divisors is an integer number (21104820).

Almost surely, 2^218323814 is an apocalyptic number.

218323814 is a deficient number, since it is larger than the sum of its proper divisors (119353306).

218323814 is a wasteful number, since it uses less digits than its factorization.

218323814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19555.

The product of its digits is 9216, while the sum is 32.

The square root of 218323814 is about 14775.7847168941. The cubic root of 218323814 is about 602.1440092116.

The spelling of 218323814 in words is "two hundred eighteen million, three hundred twenty-three thousand, eight hundred fourteen".