When do these common solutions involving the Lambert W function come out as integers, rational numbers, or algebraic numbers?

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The solutions to $2^x=2x$ are trivially given as $x=1,2$, but the algebraic solution involving the Lambert W function is given by

$$x=\frac{W_k(-\frac12\ln(2))}{-\ln(2)}=\frac12e^{-W_k\left(-\frac12\ln(2)\right)}$$

I was wondering if it were possible to deduce whether or not $x$ where an integer, rational, and/or algebraic number.

From the original problem, I can deduce the solution cannot be a rational number unless it were a positive whole number. From there, it is easy to show that $2,4$ are the only real solutions.

This question is related to "Are those two numbers transcendental?"