18738584429244 has 48 divisors (see below), whose sum is σ = 43782223796640. Its totient is φ = 6237787924480.

The previous prime is 18738584429171. The next prime is 18738584429273. The reversal of 18738584429244 is 44292448583781.

It is a super-2 number, since 2×18738584429244² (a number of 27 digits) contains 22 as substring.

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, 92328502 + ... + 92531234.

It is an arithmetic number, because the mean of its divisors is an integer number (912129662430).

Almost surely, 2^{18738584429244} is an apocalyptic number.

It is an amenable number.

18738584429244 is an abundant number, since it is smaller than the sum of its proper divisors (25043639367396).

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

18738584429244 is a wasteful number, since it uses less digits than its factorization.

18738584429244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 213070 (or 213068 counting only the distinct ones).

The product of its digits is 495452160, while the sum is 69.

The spelling of 18738584429244 in words is "eighteen trillion, seven hundred thirty-eight billion, five hundred eighty-four million, four hundred twenty-nine thousand, two hundred forty-four".