The page numbers and total items within a pager do not appear to respect the currently loaded i18n locale. For example, there's no comma in the thousands place for the en locale. What makes me believe this is a bug is that the page input which can appear DOES have i18n applied to it so the discrepancy is clearly visible between the two.

As there's no demo with such large page numbers I've created an example as well as a screenshot:
B187rdik (forked) - StackBlitz