What is the highest poplulation in July 2012 in the country with an area of 2149690 square kilometers?
CREATE TABLE "table1_166346_1" (
  "country" text,
  "region" text,
  "joined_opec" real,
  "population_july_2012" real,
  "area_km" real,
  "production_bbl_day" text
);
SELECT MAX("population_july_2012") FROM "table1_166346_1" WHERE "area_km"=2149690;