18424842498 has 64 divisors (see below), whose sum is σ = 42675609600. Its totient is φ = 5885738640.

The previous prime is 18424842493. The next prime is 18424842509. The reversal of 18424842498 is 89424842481.

18424842498 is a `hidden beast` number, since 18 + 42 + 484 + 24 + 98 = 666.

It is a super-2 number, since 2×18424842498² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (18424842493) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 118993 + ... + 225851.

It is an arithmetic number, because the mean of its divisors is an integer number (666806400).

Almost surely, 2^18424842498 is an apocalyptic number.

18424842498 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18424842498, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21337804800).

18424842498 is an abundant number, since it is smaller than the sum of its proper divisors (24250767102).

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

18424842498 is a wasteful number, since it uses less digits than its factorization.

18424842498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107004 (or 106998 counting only the distinct ones).

The product of its digits is 4718592, while the sum is 54.

The spelling of 18424842498 in words is "eighteen billion, four hundred twenty-four million, eight hundred forty-two thousand, four hundred ninety-eight".