218234974 has 8 divisors (see below), whose sum is σ = 327416040. Its totient is φ = 109096296.

The previous prime is 218234921. The next prime is 218234977. The reversal of 218234974 is 479432812.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218234977) 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, 11452 + ... + 23824.

It is an arithmetic number, because the mean of its divisors is an integer number (40927005).

Almost surely, 2^218234974 is an apocalyptic number.

218234974 is a deficient number, since it is larger than the sum of its proper divisors (109181066).

218234974 is a wasteful number, since it uses less digits than its factorization.

218234974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21194.

The product of its digits is 96768, while the sum is 40.

The square root of 218234974 is about 14772.7781408914. The cubic root of 218234974 is about 602.0623236175.

The spelling of 218234974 in words is "two hundred eighteen million, two hundred thirty-four thousand, nine hundred seventy-four".