18424497448 has 256 divisors, whose sum is σ = 44328960000. Its totient is φ = 7151058432.

The previous prime is 18424497419. The next prime is 18424497491. The reversal of 18424497448 is 84479442481.

It is a super-2 number, since 2×18424497448² (a number of 21 digits) contains 22 as substring.

18424497448 is a modest number, since divided by 497448 gives 18424 as remainder.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 178878565 + ... + 178878667.

It is an arithmetic number, because the mean of its divisors is an integer number (173160000).

Almost surely, 2^18424497448 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 18424497448, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22164480000).

18424497448 is an abundant number, since it is smaller than the sum of its proper divisors (25904462552).

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

18424497448 is a wasteful number, since it uses less digits than its factorization.

18424497448 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269 (or 251 counting only the distinct ones).

The product of its digits is 8257536, while the sum is 55.

The spelling of 18424497448 in words is "eighteen billion, four hundred twenty-four million, four hundred ninety-seven thousand, four hundred forty-eight".