220319202818 has 90 divisors (see below), whose sum is σ = 395513305785. Its totient is φ = 92003511600.

The previous prime is 220319202799. The next prime is 220319202821. The reversal of 220319202818 is 818202913022.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 188379436729 + 31939766089 = 434027^2 + 178717^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=331903.

It is a super-2 number, since 2×220319202818² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 1044166733 + ... + 1044166943.

Almost surely, 2^220319202818 is an apocalyptic number.

220319202818 is a deficient number, since it is larger than the sum of its proper divisors (175194102967).

220319202818 is an frugal number, since it uses more digits than its factorization.

220319202818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494 (or 237 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 38.

The spelling of 220319202818 in words is "two hundred twenty billion, three hundred nineteen million, two hundred two thousand, eight hundred eighteen".