18508228338292 has 48 divisors (see below), whose sum is σ = 41320695854592. Its totient is φ = 7043300419680.

The previous prime is 18508228338287. The next prime is 18508228338343. The reversal of 18508228338292 is 29283382280581.

It is a happy number.

It is a Smith number, since the sum of its digits (61) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 18508228338292.

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, 698726878 + ... + 698753365.

It is an arithmetic number, because the mean of its divisors is an integer number (860847830304).

Almost surely, 2^{18508228338292} is an apocalyptic number.

It is an amenable number.

18508228338292 is an abundant number, since it is smaller than the sum of its proper divisors (22812467516300).

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

18508228338292 is a wasteful number, since it uses less digits than its factorization.

18508228338292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1397480308 (or 1397480306 counting only the distinct ones).

The product of its (nonzero) digits is 26542080, while the sum is 61.

The spelling of 18508228338292 in words is "eighteen trillion, five hundred eight billion, two hundred twenty-eight million, three hundred thirty-eight thousand, two hundred ninety-two".