18156912288 has 192 divisors, whose sum is σ = 52394065920. Its totient is φ = 5480755200.

The previous prime is 18156912281. The next prime is 18156912313. The reversal of 18156912288 is 88221965181.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a self number, because there is not a number n which added to its sum of digits gives 18156912288.

It is not an unprimeable number, because it can be changed into a prime (18156912281) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 9662133 + ... + 9664011.

It is an arithmetic number, because the mean of its divisors is an integer number (272885760).

Almost surely, 2^18156912288 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 18156912288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26197032960).

18156912288 is an abundant number, since it is smaller than the sum of its proper divisors (34237153632).

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

18156912288 is a wasteful number, since it uses less digits than its factorization.

18156912288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2131 (or 2123 counting only the distinct ones).

The product of its digits is 552960, while the sum is 51.

The spelling of 18156912288 in words is "eighteen billion, one hundred fifty-six million, nine hundred twelve thousand, two hundred eighty-eight".