Apple's net income for its fiscal fourth quarter ended September 30th was $904 million (€637 million), or 101 cents per share, compared with $542 million, or 62 cents per share, a year earlier.
Revenue at Apple was $6.22 billion, up from $4.84 billion a year earlier.
The results, issued last night, were being watched closely because they shed light on the first full quarter during which Apple was selling its highly-anticipated iPhone.
Following deals with O2 in the UK, T-Mobile in Germany and Orange in France, the iPhone will go on sale in Europe in the coming quarter, where there is likely to be heavy demand in the run-up to Christmas.
This quarter Apple also announced a revamp of the iPod product line, including the introduction of the iPod Touch, which offers many of the touchscreen functionality of the iPhone, but without a built-in mobile phone.
Apple's stellar sales of the iPod are now having a noticeable "halo" effect on sales of its other products.
In recent days analyst firm IDC confirmed Apple was the number three brand in the US PC market behind Hewlett Packard and Dell.
Apple employs about 1,200 people at its facility in Cork, which primarily handles its supply chain operations for Europe, the Middle East and Africa.
