18361 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.
It is a sphenic number, since it is the product of 3 distinct primes.
It is an alternating number because its digits alternate between odd and even.
It is the 136-th Hogben number.
It is a Duffinian number.
It is a nialpdrome in base 12.
218361 is an apocalyptic number.
18361 is the 86-th heptagonal number.
It is an amenable number.
18361 is an equidigital number, since it uses as much as digits as its factorization.
18361 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 111.
The square root of 18361 is about 135.5027674994. The cubic root of 18361 is about 26.3814569817.
The spelling of 18361 in words is "eighteen thousand, three hundred sixty-one".