518142218 has 32 divisors (see below), whose sum is σ = 900626688. Its totient is φ = 220953600.

The previous prime is 518142199. The next prime is 518142253. The reversal of 518142218 is 812241815.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123983 + ... + 128093.

It is an arithmetic number, because the mean of its divisors is an integer number (28144584).

Almost surely, 2^518142218 is an apocalyptic number.

518142218 is a deficient number, since it is larger than the sum of its proper divisors (382484470).

518142218 is a wasteful number, since it uses less digits than its factorization.

518142218 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4478.

The product of its digits is 5120, while the sum is 32.

The square root of 518142218 is about 22762.7374891510. The cubic root of 518142218 is about 803.1863638821.

The spelling of 518142218 in words is "five hundred eighteen million, one hundred forty-two thousand, two hundred eighteen".