It is a happy number.
18341186400 is a `hidden beast` number, since 1 + 8 + 3 + 4 + 1 + 1 + 8 + 640 + 0 = 666.
It is a tau number, because it is divible by the number of its divisors (360).
It is a congruent number.
It is an unprimeable number.
Almost surely, 218341186400 is an apocalyptic number.
18341186400 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 18341186400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35205910740).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
18341186400 is a wasteful number, since it uses less digits than its factorization.
18341186400 is an odious number, because the sum of its binary digits is odd.
The spelling of 18341186400 in words is "eighteen billion, three hundred forty-one million, one hundred eighty-six thousand, four hundred".