question: What is the total population from the 2000 census for the municipality that has a 464.5 square km area and a population density in 2010 larger than 1840?
answer: SELECT COUNT(population_2000_census) FROM table_name_58 WHERE area__km²_ = 464.5 AND population_density_2010___km²_ > 1840
context: CREATE TABLE table_name_58 (population_2000_census VARCHAR, area__km²_ VARCHAR, population_density_2010___km²_ VARCHAR)