18245393152 has 144 divisors (see below), whose sum is σ = 43466068800. Its totient is φ = 7478231040.

The previous prime is 18245393143. The next prime is 18245393161. The reversal of 18245393152 is 25139354281.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (18245393143) and next prime (18245393161).

It is a junction number, because it is equal to n+sod(n) for n = 18245393099 and 18245393108.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5662902 + ... + 5666122.

It is an arithmetic number, because the mean of its divisors is an integer number (301847700).

Almost surely, 2^18245393152 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18245393152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21733034400).

18245393152 is an abundant number, since it is smaller than the sum of its proper divisors (25220675648).

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

18245393152 is a wasteful number, since it uses less digits than its factorization.

18245393152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3382 (or 3368 counting only the distinct ones).

The product of its digits is 259200, while the sum is 43.

The spelling of 18245393152 in words is "eighteen billion, two hundred forty-five million, three hundred ninety-three thousand, one hundred fifty-two".