What is the number 1 in Tarot cards?

Excuse me, but I was wondering if you could shed some light on the meaning behind the number one in Tarot cards. I understand that Tarot cards are often used for divination and personal growth, and I'm curious about the significance of this particular number. Is it associated with a specific card, or does it hold a broader meaning within the Tarot tradition? Your insights would be greatly appreciated.