Fatto generale: 18797 is a number for which we're missing a fact (submit one to numbersapi at google mail!).
Fatto matematico: 18797 is an uninteresting number.
Trivia: 18797 is an unremarkable number.
Data storica: June 18th is the day in 1767 that Samuel Wallis, an English sea captain, sights Tahiti and is considered the first European to reach the island.