In sports betting, the term "1" typically refers to a betting odds format known as "Home Win" or "Team 1 to Win." It means that you are placing a bet on the outcome where the home team wins the event or match.
The three Russian founders of 1xBet, Roman Semiokhin, Sergey Karshkov and Dmitry Kazorin, are all from the city of Brjansk, some 370 kilometres west of Moscow, although all three currently live in Cyprus.