Adding to 181104 its reverse (401181), we get a palindrome (582285).
It is an Ulam number.
It is a congruent number.
It is an unprimeable number.
2181104 is an apocalyptic number.
181104 is a gapful number since it is divisible by the number (14) 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 181104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (297600).
It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.
181104 is a wasteful number, since it uses less digits than its factorization.
181104 is an evil number, because the sum of its binary digits is even.
The square root of 181104 is about 425.5631563000. The cubic root of 181104 is about 56.5773602887.
The spelling of 181104 in words is "one hundred eighty-one thousand, one hundred four".