I'm talking about the keypad at the right end of the keyboard.
When I press some number keys, apps open; if I use the numbers at the top of the keyboard, they work as usual.
I can't find this specific issue anywhere online.

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1 opens Google Chrome
4 opens the volume level
7 opens the calculator
2, 3, 5, 6, 8, 9 work normally
Nothing is turned on in "Ease of access center"
I checked Google Chrome, and the 1 key is not set up as a shortcut
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How do I stop the numbers keypad from doing this?