Batya is from the Hebrew Batyāh (בִּתְיָה — daughter of God). Batya (Bithiah) is the Pharaoh's daughter who adopted the infant Moses after rescuing him from the Nile (Exodus 2:5-10) — central to the Israelite Exodus narrative Jewish + Christian + Islamic veneration. Hebrew feminine name reflecting Jewish biblical heritage.
Batya does not currently appear in the US Social Security Administration's top 1,000 girls' names, so we don't publish a US rank or birth count for it. That says nothing about the name's standing elsewhere in the world — only that it sits outside the ranked US data we rely on.
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In Pythagorean numerology the letters of Batya reduce to 4, The Builder. This is a traditional interpretive system, not a factual claim about the name.