So actually the number you're referring to the natural base of logarithm, usually written "e". It turns out that e has the same irrationality measure as irrati

So actually the number you're referring to the natural base of logarithm, usually written "e". It turns out that e has the same irrationality measure as irrational algebraic numbers (2), meaning it can be approximated similarly well as irrational algebraic numbers, and not as well as some other transcendstal numbers like Liouville's constant