18249440160 has 768 divisors, whose sum is σ = 75246796800. Its totient is φ = 3618177024.

The previous prime is 18249440147. The next prime is 18249440171. The reversal of 18249440160 is 6104494281.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 38098801 + ... + 38099279.

It is an arithmetic number, because the mean of its divisors is an integer number (97977600).

Almost surely, 2^18249440160 is an apocalyptic number.

18249440160 is a gapful number since it is divisible by the number (10) 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 18249440160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37623398400).

18249440160 is an abundant number, since it is smaller than the sum of its proper divisors (56997356640).

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

18249440160 is a wasteful number, since it uses less digits than its factorization.

18249440160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573 (or 565 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 39.

The spelling of 18249440160 in words is "eighteen billion, two hundred forty-nine million, four hundred forty thousand, one hundred sixty".