516247818 has 16 divisors (see below), whose sum is σ = 1033521120. Its totient is φ = 171911696.

The previous prime is 516247741. The next prime is 516247829. The reversal of 516247818 is 818742615.

It is a super-2 number, since 2×516247818² = 533023619179522248, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 516247818.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 36105 + ... + 48332.

It is an arithmetic number, because the mean of its divisors is an integer number (64595070).

Almost surely, 2^516247818 is an apocalyptic number.

516247818 is an abundant number, since it is smaller than the sum of its proper divisors (517273302).

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

516247818 is a wasteful number, since it uses less digits than its factorization.

516247818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85461.

The product of its digits is 107520, while the sum is 42.

The square root of 516247818 is about 22721.0875179865. The cubic root of 516247818 is about 802.2063148332.

The spelling of 516247818 in words is "five hundred sixteen million, two hundred forty-seven thousand, eight hundred eighteen".