Divisor 18665

To determine if any number is divisible by 18665, you must apply 2 tests successively. If all of them 'pass' - that is, if your number is divisible by 5 and 3733 - then it is divisible by 18665.

The following tests must pass:

• Test if a number is divisible by 5
• The "Sophie Barcroft-Norman Test" for Divisibility by 3733

Easy!