Also aiding in emphasizing the "1" was the perspective. With the 20mm lens positioned closer to the "1" than the other numbers, the "1" becomes the largest in the frame and therefore the most prominent. Everyone loves number "1" and there are far more uses for an emphasized "1" than any other number.
The Sony FE 20mm f/1.8 G Lens is very fun to walk around with, letting your creativity take over.
The results from this lens are quite impressive.