18306385076 has 48 divisors (see below), whose sum is σ = 37860552576. Its totient is φ = 7582633344.

The previous prime is 18306385063. The next prime is 18306385079. The reversal of 18306385076 is 67058360381.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 18306385076.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18306385079) 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 15 ways as a sum of consecutive naturals, for example, 7370 + ... + 191486.

It is an arithmetic number, because the mean of its divisors is an integer number (788761512).

Almost surely, 2^18306385076 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 18306385076, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18930276288).

18306385076 is an abundant number, since it is smaller than the sum of its proper divisors (19554167500).

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

18306385076 is a wasteful number, since it uses less digits than its factorization.

18306385076 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184248 (or 184246 counting only the distinct ones).

The product of its (nonzero) digits is 725760, while the sum is 47.

The spelling of 18306385076 in words is "eighteen billion, three hundred six million, three hundred eighty-five thousand, seventy-six".