18000180288 has 336 divisors, whose sum is σ = 56017241280. Its totient is φ = 5723633664.

The previous prime is 18000180241. The next prime is 18000180301. The reversal of 18000180288 is 88208100081.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 48257670 + ... + 48258042.

It is an arithmetic number, because the mean of its divisors is an integer number (166717980).

Almost surely, 2^18000180288 is an apocalyptic number.

18000180288 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 18000180288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28008620640).

18000180288 is an abundant number, since it is smaller than the sum of its proper divisors (38017060992).

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

18000180288 is a wasteful number, since it uses less digits than its factorization.

18000180288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536 (or 514 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 36.

The spelling of 18000180288 in words is "eighteen billion, one hundred eighty thousand, two hundred eighty-eight".