Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_17758010_2 (original_air_date VARCHAR, us_viewers__millions_ VARCHAR)
### Question:
How many original air dates have U.S. Views (millions) of 19.49?
### Answer:
SELECT COUNT(original_air_date) FROM table_17758010_2 WHERE us_viewers__millions_ = "19.49"