218818252 has 6 divisors (see below), whose sum is σ = 382931948. Its totient is φ = 109409124.

The previous prime is 218818219. The next prime is 218818277. The reversal of 218818252 is 252818812.

218818252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27352278 + ... + 27352285.

Almost surely, 2^218818252 is an apocalyptic number.

It is an amenable number.

218818252 is a deficient number, since it is larger than the sum of its proper divisors (164113696).

218818252 is a wasteful number, since it uses less digits than its factorization.

218818252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54704567 (or 54704565 counting only the distinct ones).

The product of its digits is 20480, while the sum is 37.

The square root of 218818252 is about 14792.5066165272. The cubic root of 218818252 is about 602.5982250627.

The spelling of 218818252 in words is "two hundred eighteen million, eight hundred eighteen thousand, two hundred fifty-two".