18738060224 has 126 divisors (see below), whose sum is σ = 42503140800. Its totient is φ = 8191452672.

The previous prime is 18738060217. The next prime is 18738060227. The reversal of 18738060224 is 42206083781.

It is a super-2 number, since 2×18738060224² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18738060227) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3902177 + ... + 3906975.

Almost surely, 2^18738060224 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 18738060224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21251570400).

18738060224 is an abundant number, since it is smaller than the sum of its proper divisors (23765080576).

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

18738060224 is a wasteful number, since it uses less digits than its factorization.

18738060224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4875 (or 4833 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 41.

The spelling of 18738060224 in words is "eighteen billion, seven hundred thirty-eight million, sixty thousand, two hundred twenty-four".