2642208818 has 18 divisors (see below), whose sum is σ = 4185075069. Its totient is φ = 1250918352.

The previous prime is 2642208817. The next prime is 2642208853. The reversal of 2642208818 is 8188022462.

It can be written as a sum of positive squares in 2 ways, for example, as 2207778169 + 434430649 = 46987^2 + 20843^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=36347.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2642208817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1380230 + ... + 1382142.

Almost surely, 2^2642208818 is an apocalyptic number.

2642208818 is a deficient number, since it is larger than the sum of its proper divisors (1542866251).

2642208818 is an frugal number, since it uses more digits than its factorization.

2642208818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3866 (or 1934 counting only the distinct ones).

The product of its (nonzero) digits is 98304, while the sum is 41.

The square root of 2642208818 is about 51402.4203515749. The cubic root of 2642208818 is about 1382.4699897456.

The spelling of 2642208818 in words is "two billion, six hundred forty-two million, two hundred eight thousand, eight hundred eighteen".