It's named qnorm

qnorm(p=0.841344746068543)

Output

1

The following family of functions exists in general for a given distribution (taking norm as an example):

- rnorm - randomly select numbers from a distribution
- dnorm - the density at a certain point in a distribution.
- qnorm stands for quantile function.
- pnorm stands for "proportional norm" and is a distribution function (which you have used)

For example, you have the same set for unif (the uniform distribution) (dunif,runif,punif,qunif)