18802307198208 has 144 divisors (see below), whose sum is σ = 50587118015616. Its totient is φ = 6199230259200.

The previous prime is 18802307198197. The next prime is 18802307198231. The reversal of 18802307198208 is 80289170320881.

It is a super-2 number, since 2×18802307198208² (a number of 27 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78456741 + ... + 78696027.

It is an arithmetic number, because the mean of its divisors is an integer number (351299430664).

Almost surely, 2^{18802307198208} 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 18802307198208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25293559007808).

18802307198208 is an abundant number, since it is smaller than the sum of its proper divisors (31784810817408).

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

18802307198208 is a wasteful number, since it uses less digits than its factorization.

18802307198208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240420 (or 240406 counting only the distinct ones).

The product of its (nonzero) digits is 3096576, while the sum is 57.

The spelling of 18802307198208 in words is "eighteen trillion, eight hundred two billion, three hundred seven million, one hundred ninety-eight thousand, two hundred eight".