218043814 has 8 divisors (see below), whose sum is σ = 327222360. Its totient is φ = 108969696.

The previous prime is 218043799. The next prime is 218043877. The reversal of 218043814 is 418340812.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20659 + ... + 29374.

It is an arithmetic number, because the mean of its divisors is an integer number (40902795).

Almost surely, 2^218043814 is an apocalyptic number.

218043814 is a deficient number, since it is larger than the sum of its proper divisors (109178546).

218043814 is a wasteful number, since it uses less digits than its factorization.

218043814 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52214.

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 218043814 is about 14766.3067149508. The cubic root of 218043814 is about 601.8864827918.

The spelling of 218043814 in words is "two hundred eighteen million, forty-three thousand, eight hundred fourteen".