18424842500 has 60 divisors (see below), whose sum is σ = 40609400832. Its totient is φ = 7311780000.

The previous prime is 18424842493. The next prime is 18424842509. The reversal of 18424842500 is 524842481.

It is a super-2 number, since 2×18424842500² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18424842509) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 288485 + ... + 346515.

Almost surely, 2^18424842500 is an apocalyptic number.

18424842500 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 18424842500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20304700416).

18424842500 is an abundant number, since it is smaller than the sum of its proper divisors (22184558332).

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

18424842500 is a wasteful number, since it uses less digits than its factorization.

18424842500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58182 (or 58165 counting only the distinct ones).

The product of its (nonzero) digits is 81920, while the sum is 38.

The spelling of 18424842500 in words is "eighteen billion, four hundred twenty-four million, eight hundred forty-two thousand, five hundred".