722168830818 has 90 divisors (see below), whose sum is σ = 1631658197169. Its totient is φ = 238736358288.

The previous prime is 722168830811. The next prime is 722168830829. The reversal of 722168830818 is 818038861227.

It can be written as a sum of positive squares in 2 ways, for example, as 720795906009 + 1372924809 = 848997^2 + 37053^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=600903.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (722168830811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 1936109280 + ... + 1936109652.

Almost surely, 2^722168830818 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 722168830818

722168830818 is an abundant number, since it is smaller than the sum of its proper divisors (909489366351).

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

722168830818 is an frugal number, since it uses more digits than its factorization.

722168830818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1118 (or 557 counting only the distinct ones).

The product of its (nonzero) digits is 2064384, while the sum is 54.

The spelling of 722168830818 in words is "seven hundred twenty-two billion, one hundred sixty-eight million, eight hundred thirty thousand, eight hundred eighteen".