518083818 has 16 divisors (see below), whose sum is σ = 1184191680. Its totient is φ = 148023936.

The previous prime is 518083801. The next prime is 518083859. The reversal of 518083818 is 818380815.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 12335329 = 518083818 / (5 + 1 + 8 + 0 + 8 + 3 + 8 + 1 + 8).

It is a self number, because there is not a number n which added to its sum of digits gives 518083818.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6167623 + ... + 6167706.

It is an arithmetic number, because the mean of its divisors is an integer number (74011980).

Almost surely, 2^518083818 is an apocalyptic number.

518083818 is an abundant number, since it is smaller than the sum of its proper divisors (666107862).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

518083818 is a wasteful number, since it uses less digits than its factorization.

518083818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12335341.

The product of its (nonzero) digits is 61440, while the sum is 42.

The square root of 518083818 is about 22761.4546547447. The cubic root of 518083818 is about 803.1561869381.

The spelling of 518083818 in words is "five hundred eighteen million, eighty-three thousand, eight hundred eighteen".