218914444 has 24 divisors (see below), whose sum is σ = 443830688. Its totient is φ = 92534400.

The previous prime is 218914439. The next prime is 218914453. The reversal of 218914444 is 444419812.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51507 + ... + 55594.

Almost surely, 2^218914444 is an apocalyptic number.

It is an amenable number.

218914444 is an abundant number, since it is smaller than the sum of its proper divisors (224916244).

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

218914444 is a wasteful number, since it uses less digits than its factorization.

218914444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107185 (or 107183 counting only the distinct ones).

The product of its digits is 36864, while the sum is 37.

The square root of 218914444 is about 14795.7576352142. The cubic root of 218914444 is about 602.6865123913.

It can be divided in two parts, 21891 and 4444, that added together give a triangular number (26335 = T₂₂₉).

The spelling of 218914444 in words is "two hundred eighteen million, nine hundred fourteen thousand, four hundred forty-four".