18297005244 has 96 divisors (see below), whose sum is σ = 51390635520. Its totient is φ = 4949620992.

The previous prime is 18297005213. The next prime is 18297005291. The reversal of 18297005244 is 44250079281.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 18297005196 and 18297005205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4717434 + ... + 4721310.

It is an arithmetic number, because the mean of its divisors is an integer number (535319120).

Almost surely, 2^18297005244 is an apocalyptic number.

18297005244 is a gapful number since it is divisible by the number (14) 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 18297005244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25695317760).

18297005244 is an abundant number, since it is smaller than the sum of its proper divisors (33093630276).

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

18297005244 is a wasteful number, since it uses less digits than its factorization.

18297005244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6867 (or 6865 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 42.

The spelling of 18297005244 in words is "eighteen billion, two hundred ninety-seven million, five thousand, two hundred forty-four".