The number one is the first number and is defined as being a single unit or thing. Dreaming of the number one could indicate authority and order. It could also represent a new beginning.

Positive: Dreaming of the number one could represent something new. It could also symbolize a new beginning, unity, timing, position or order, primacy, deity, or sufficiency.

Negative: Seeing the number one in a dream could represent pride, self-will, self-exaltation, and selfishness.
(Deuteronomy 6:4; John 17:21; Matthew 6:33; Exodus 20:3; Revelation 1:11,17; Revelation 2:8; Isaiah 44:6; Isaiah 45:5-6).