18827442112 has 56 divisors (see below), whose sum is σ = 38109593072. Its totient is φ = 9226137600.

The previous prime is 18827442107. The next prime is 18827442169. The reversal of 18827442112 is 21124472881.

It is a super-2 number, since 2×18827442112² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1096312 + ... + 1113352.

Almost surely, 2^18827442112 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 18827442112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19054796536).

18827442112 is an abundant number, since it is smaller than the sum of its proper divisors (19282150960).

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

18827442112 is a wasteful number, since it uses less digits than its factorization.

18827442112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17397 (or 17387 counting only the distinct ones).

The product of its digits is 57344, while the sum is 40.

The spelling of 18827442112 in words is "eighteen billion, eight hundred twenty-seven million, four hundred forty-two thousand, one hundred twelve".