18167941888 has 72 divisors (see below), whose sum is σ = 38461400208. Its totient is φ = 8535539712.

The previous prime is 18167941879. The next prime is 18167941889. The reversal of 18167941888 is 88814976181.

It is a super-2 number, since 2×18167941888² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18167941889) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2925795 + ... + 2931997.

It is an arithmetic number, because the mean of its divisors is an integer number (534186114).

Almost surely, 2^18167941888 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 18167941888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19230700104).

18167941888 is an abundant number, since it is smaller than the sum of its proper divisors (20293458320).

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

18167941888 is an equidigital number, since it uses as much as digits as its factorization.

18167941888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6909 (or 6895 counting only the distinct ones).

The product of its digits is 6193152, while the sum is 61.

The spelling of 18167941888 in words is "eighteen billion, one hundred sixty-seven million, nine hundred forty-one thousand, eight hundred eighty-eight".