18857735112 has 128 divisors (see below), whose sum is σ = 51904800000. Its totient is φ = 5682733056.

The previous prime is 18857735093. The next prime is 18857735123. The reversal of 18857735112 is 21153775881.

It is a super-2 number, since 2×18857735112² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2350564 + ... + 2358572.

It is an arithmetic number, because the mean of its divisors is an integer number (405506250).

Almost surely, 2^18857735112 is an apocalyptic number.

18857735112 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18857735112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25952400000).

18857735112 is an abundant number, since it is smaller than the sum of its proper divisors (33047064888).

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

18857735112 is a wasteful number, since it uses less digits than its factorization.

18857735112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8263 (or 8259 counting only the distinct ones).

The product of its digits is 470400, while the sum is 48.

The spelling of 18857735112 in words is "eighteen billion, eight hundred fifty-seven million, seven hundred thirty-five thousand, one hundred twelve".