18159182208 has 256 divisors, whose sum is σ = 57017184000. Its totient is φ = 5673369600.

The previous prime is 18159182207. The next prime is 18159182219. The reversal of 18159182208 is 80228195181.

It is a super-3 number, since 3×18159182208³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18159182207) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6367983 + ... + 6370833.

It is an arithmetic number, because the mean of its divisors is an integer number (222723375).

Almost surely, 2^18159182208 is an apocalyptic number.

18159182208 is a gapful number since it is divisible by the number (18) 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 18159182208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28508592000).

18159182208 is an abundant number, since it is smaller than the sum of its proper divisors (38858001792).

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

18159182208 is a wasteful number, since it uses less digits than its factorization.

18159182208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2990 (or 2972 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 45.

The spelling of 18159182208 in words is "eighteen billion, one hundred fifty-nine million, one hundred eighty-two thousand, two hundred eight".