Chiamaka is an Igbo (Nigerian) name combining Chi (God) and amaka (is beautiful) — meaning "God is beautiful."
Chiamaka is widely used in Igbo Christian communities.
Chiamaka 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.
In Pythagorean numerology the letters of Chiamaka reduce to 2, The Peacemaker. This is a traditional interpretive system, not a factual claim about the name.