1.  Number Symbolism in Tarot: One is the first number, so it symbolizes leadership. It’s an obvious symbol of unity and singularity. The number one can even be thought of as a thesis—an original statement of thought, belief, and perception, still unchallenged by other competing ideas. One also represents the source of all existence. In the Tarot, every numbered card in a Minor Arcana suit is said to originate within the ace of that suit. As such, the number one symbolized fertility, and the potential and possibility of every new beginning. That symbolism is reinforced by the graphic nature of both the Arabic numeral 1 of the Roman numeral I. Both shapes resemble phallic symbols. Even as a geometric figure, the number one is illustrated as a single point—a dot, which could represent either an egg or a sperm.

2.  One is considered a lucky number as it is indivisible, and when multiplied by itself remains the same. One is associated with God, the intellect, purity, and the sun. Children born on the 1st of the month are believed to be enterprising, independent and lucky.