Fait mathématique: 1610 is the number of partitions of 43 into distinct parts.
Culture générale: 1610 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Date historique: May 28th is the day in 585 BC that a solar eclipse occurs while Alyattes is battling Cyaxares in the Battle of the Eclipse, leading to a truce.