218493074 has 16 divisors (see below), whose sum is σ = 330946560. Its totient is φ = 108182400.

The previous prime is 218493073. The next prime is 218493157. The reversal of 218493074 is 470394812.

It is not an unprimeable number, because it can be changed into a prime (218493073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114722 + ... + 116610.

It is an arithmetic number, because the mean of its divisors is an integer number (20684160).

Almost surely, 2^218493074 is an apocalyptic number.

218493074 is a deficient number, since it is larger than the sum of its proper divisors (112453486).

218493074 is a wasteful number, since it uses less digits than its factorization.

218493074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2425.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 218493074 is about 14781.5112217933. The cubic root of 218493074 is about 602.2995771671.

The spelling of 218493074 in words is "two hundred eighteen million, four hundred ninety-three thousand, seventy-four".