18836746208 has 72 divisors (see below), whose sum is σ = 43171950024. Its totient is φ = 8066822400.

The previous prime is 18836746207. The next prime is 18836746211. The reversal of 18836746208 is 80264763881.

It is a self number, because there is not a number n which added to its sum of digits gives 18836746208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18836746207) 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 11 ways as a sum of consecutive naturals, for example, 2538023 + ... + 2545433.

It is an arithmetic number, because the mean of its divisors is an integer number (599610417).

Almost surely, 2^18836746208 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18836746208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21585975012).

18836746208 is an abundant number, since it is smaller than the sum of its proper divisors (24335203816).

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

18836746208 is a wasteful number, since it uses less digits than its factorization.

18836746208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9056 (or 9041 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 53.

The spelling of 18836746208 in words is "eighteen billion, eight hundred thirty-six million, seven hundred forty-six thousand, two hundred eight".