Divisor 19537

To determine if any number is divisible by 19537, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 7 and 2791 - then it is divisible by 19537.

The following tests must pass:

• Test if a number is divisible by 7
• The "Nate Barney Test" for Divisibility by 2791

Easy!