18416574504 has 128 divisors (see below), whose sum is σ = 55487980800. Its totient is φ = 5636782080.

The previous prime is 18416574503. The next prime is 18416574523. The reversal of 18416574504 is 40547561481.

18416574504 is a `hidden beast` number, since 1 + 84 + 1 + 65 + 7 + 4 + 504 = 666.

It is a super-2 number, since 2×18416574504² (a number of 21 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 18416574504.

It is not an unprimeable number, because it can be changed into a prime (18416574503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89389 + ... + 211715.

It is an arithmetic number, because the mean of its divisors is an integer number (433499850).

Almost surely, 2^18416574504 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 18416574504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27743990400).

18416574504 is an abundant number, since it is smaller than the sum of its proper divisors (37071406296).

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

18416574504 is a wasteful number, since it uses less digits than its factorization.

18416574504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122400 (or 122390 counting only the distinct ones).

The product of its (nonzero) digits is 537600, while the sum is 45.

The spelling of 18416574504 in words is "eighteen billion, four hundred sixteen million, five hundred seventy-four thousand, five hundred four".