How old was Eber when he died?
Eber lived 464 years, from 2281 BC to 1817 BC.
Eber died at 464. The chart places his birth at 2281 BC and his death at 1817 BC, on the Ussher chronology it follows. The name behind the word Hebrew. (Gen. 11:16-17)
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A date means more beside its neighbours. The chart puts this answer in place next to everything happening around it — biblical and world history across the same six thousand years.
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Everything on this page has a place on one 45×37″ chart — and once you can see what came before and after it, it stops being a fact and starts being a story you can follow.