18245291888 has 40 divisors (see below), whose sum is σ = 37456285680. Its totient is φ = 8579916800.

The previous prime is 18245291887. The next prime is 18245291957. The reversal of 18245291888 is 88819254281.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18245291887) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 371558 + ... + 417786.

It is an arithmetic number, because the mean of its divisors is an integer number (936407142).

Almost surely, 2^18245291888 is an apocalyptic number.

It is an amenable number.

18245291888 is an abundant number, since it is smaller than the sum of its proper divisors (19210993792).

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

18245291888 is a wasteful number, since it uses less digits than its factorization.

18245291888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47705 (or 47699 counting only the distinct ones).

The product of its digits is 2949120, while the sum is 56.

The spelling of 18245291888 in words is "eighteen billion, two hundred forty-five million, two hundred ninety-one thousand, eight hundred eighty-eight".