218500118 has 4 divisors (see below), whose sum is σ = 327750180. Its totient is φ = 109250058.

The previous prime is 218500081. The next prime is 218500127. The reversal of 218500118 is 811005812.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54625028 + ... + 54625031.

It is an arithmetic number, because the mean of its divisors is an integer number (81937545).

Almost surely, 2^218500118 is an apocalyptic number.

218500118 is a deficient number, since it is larger than the sum of its proper divisors (109250062).

218500118 is a wasteful number, since it uses less digits than its factorization.

218500118 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109250061.

The product of its (nonzero) digits is 640, while the sum is 26.

The square root of 218500118 is about 14781.7494905035. The cubic root of 218500118 is about 602.3060496112.

The spelling of 218500118 in words is "two hundred eighteen million, five hundred thousand, one hundred eighteen".