Number 1 — One

The number 1 is written with one or two Western digits from the Hindu–Arabic numeral system. It is odd and neither prime nor composite. Its positive divisors are 1. Additional properties include being a perfect square and a triangular number and a Fibonacci number. These mathematical properties are verifiable; religious, esoteric, and numerological readings depend on a particular tradition and are not properties of the number itself. Numerological reading: the number is associated with origin, unity, and will. In a talismanic or meditative composition it may express an intention to focus on these qualities; meanings vary by school and context.