518418212 has 12 divisors (see below), whose sum is σ = 977019036. Its totient is φ = 239269920.

The previous prime is 518418203. The next prime is 518418217. The reversal of 518418212 is 212814815.

It can be written as a sum of positive squares in 2 ways, for example, as 141514816 + 376903396 = 11896^2 + 19414^2 .

It is not an unprimeable number, because it can be changed into a prime (518418217) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4984739 + ... + 4984842.

It is an arithmetic number, because the mean of its divisors is an integer number (81418253).

Almost surely, 2^518418212 is an apocalyptic number.

518418212 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

518418212 is a deficient number, since it is larger than the sum of its proper divisors (458600824).

518418212 is a wasteful number, since it uses less digits than its factorization.

518418212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9969598 (or 9969596 counting only the distinct ones).

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

The square root of 518418212 is about 22768.7990899828. The cubic root of 518418212 is about 803.3289471743.

The spelling of 518418212 in words is "five hundred eighteen million, four hundred eighteen thousand, two hundred twelve".