Step 1: Divide the number into separate digits:
19610 => 1 9 6 1 0
Step 2: Calculate the distance between each digit and the next (the last digit with the first):
1 to 9 = 8
9 to 6 = 3
6 to 1 = 5
1 to 0 = 1
0 to 1 = 1
Step 3: Combine the filters to a string:
8 3 5 1 1 = 83511