18009733248 has 192 divisors, whose sum is σ = 56338027200. Its totient is φ = 5489178624.

The previous prime is 18009733229. The next prime is 18009733297. The reversal of 18009733248 is 84233790081.

It is a tau number, because it is divible by the number of its divisors (192).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1596813 + ... + 1608051.

It is an arithmetic number, because the mean of its divisors is an integer number (293427225).

Almost surely, 2^18009733248 is an apocalyptic number.

18009733248 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 18009733248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28169013600).

18009733248 is an abundant number, since it is smaller than the sum of its proper divisors (38328293952).

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

18009733248 is a wasteful number, since it uses less digits than its factorization.

18009733248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11379 (or 11364 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The spelling of 18009733248 in words is "eighteen billion, nine million, seven hundred thirty-three thousand, two hundred forty-eight".