@gigabecquerel let's calculate
An average glass is approximately 200 mL (200 cm³), let's accept that it's filled up full. The density of water on standard conditions is 1g/cm³, so it's 200g. The atomic mass of water is 12 atomic mass unit, so one mole of water is 12g, which means that there are about 8 moles of water in the glass.
@gigabecquerel As one may know from simple chemistry, Avogadro number allows us to calculate the number of molecules based on multiplying moles with 6.02×10²³, which means that there are around 48×10²³ water molecules, which means that there are 96×10²³ hydrogen atoms - since the formula for water is H²O.
As there is only one (which is less than 96×10²³) star in the entire Solar System for the foreseeable future; yes, it is higher than the number of stars in the Solar System.