518218244 has 12 divisors (see below), whose sum is σ = 946311744. Its totient is φ = 247843464.

The previous prime is 518218243. The next prime is 518218247. The reversal of 518218244 is 442812815.

It is not an unprimeable number, because it can be changed into a prime (518218243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2816312 + ... + 2816495.

It is an arithmetic number, because the mean of its divisors is an integer number (78859312).

Almost surely, 2^518218244 is an apocalyptic number.

It is an amenable number.

518218244 is a deficient number, since it is larger than the sum of its proper divisors (428093500).

518218244 is a wasteful number, since it uses less digits than its factorization.

518218244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5632834 (or 5632832 counting only the distinct ones).

The product of its digits is 20480, while the sum is 35.

The square root of 518218244 is about 22764.4073940000. The cubic root of 518218244 is about 803.2256452853.

The spelling of 518218244 in words is "five hundred eighteen million, two hundred eighteen thousand, two hundred forty-four".