CREATE TABLE table_19401346_1 (us_viewers__millions_ VARCHAR2, no_in_season VARCHAR2)

How many millions of people in the US saw the episode with season number 1?
SELECT us_viewers__millions_ FROM table_19401346_1 WHERE no_in_season = 1
SELECT "us_viewers__millions_" FROM "table_19401346_1" WHERE "no_in_season" = 1