818202818 has 16 divisors (see below), whose sum is σ = 1240743096. Its totient is φ = 404630400.

The previous prime is 818202779. The next prime is 818202841.

818202818 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 4 ways, for example, as 666001249 + 152201569 = 25807^2 + 12337^2 .

It is a super-2 number, since 2×818202818² = 1338911702766282248, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 300230 + ... + 302942.

Almost surely, 2^818202818 is an apocalyptic number.

818202818 is a deficient number, since it is larger than the sum of its proper divisors (422540278).

818202818 is a wasteful number, since it uses less digits than its factorization.

818202818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4309.

The product of its (nonzero) digits is 16384, while the sum is 38.

The square root of 818202818 is about 28604.2447549310. The cubic root of 818202818 is about 935.3058635007.

The spelling of 818202818 in words is "eight hundred eighteen million, two hundred two thousand, eight hundred eighteen".