218552968 has 16 divisors (see below), whose sum is σ = 410305500. Its totient is φ = 109138176.

The previous prime is 218552963. The next prime is 218552977. The reversal of 218552968 is 869255812.

It can be written as a sum of positive squares in 2 ways, for example, as 184470724 + 34082244 = 13582^2 + 5838^2 .

It is not an unprimeable number, because it can be changed into a prime (218552963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10413 + ... + 23356.

Almost surely, 2^218552968 is an apocalyptic number.

It is an amenable number.

218552968 is a deficient number, since it is larger than the sum of its proper divisors (191752532).

218552968 is a wasteful number, since it uses less digits than its factorization.

218552968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34584 (or 34580 counting only the distinct ones).

The product of its digits is 345600, while the sum is 46.

The square root of 218552968 is about 14783.5370598514. The cubic root of 218552968 is about 602.3546068826.

The spelling of 218552968 in words is "two hundred eighteen million, five hundred fifty-two thousand, nine hundred sixty-eight".