There is no specific mention of 19 being a lucky number in Islam. The concept of "lucky numbers" is not a central aspect of Islamic belief.
In Islam, good fortune and blessings are attributed to God's will and mercy, not to specific numbers. The focus is on righteous actions, faith, and seeking guidance from the Quran and Sunnah.
While some cultures and traditions might associate numbers with specific meanings or significance, Islam does not have a system of numerology or superstition attached to numbers.