• 1956 = 54980371265625 is the smallest sixth power that begins with 10 distinct digits.
• 195 can be written using four 4's:
195 is nontrivially palindromic in base 2, base 4, base 8 and base 14.
195 is digitally balanced in base 2, 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 a D-number.
195 is an undulating number in base 8.
195 is a lucky number.
195 is a nontrivial repdigit in base 14.
It is a plaindrome in base 7, base 9, base 11 and base 14.
It is a nialpdrome in base 14, base 15 and base 16.
It is a zygodrome in base 2 and base 14.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 195.
195 is a gapful number since it is divisible by the number (15) formed by its first and last digit.
195 is a wasteful number, since it uses less digits than its factorization.
195 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 21.
The square root of 195 is about 13.9642400438. The cubic root of 195 is about 5.7988899976.
Adding to 195 its sum of digits (15), we get a triangular number (210 = T20).
The spelling of 195 in words is "one hundred ninety-five", and thus it is an aban number.