1 billion is equal to one thousand million, which is written as 1,000,000,000. It can also be expressed as 10 to the 9th power (10^9). This is the definition used in most English-speaking countries like the United States, the United Kingdom, and Canada. In some European countries, however, a billion means one million million (1,000,000,000,000) but this is less common in modern usage. To put it in perspective, 1 billion seconds is approximately 31.7 years. In the Indian numbering system, 1 billion is equal to 100 crore (one crore = 10 million). Therefore, 1 billion = 100 crore. So, simply put:
- 1 billion = 1,000,000,000
- 1 billion = 1,000 million
- 1 billion = 100 crore
This is the most standard meaning of 1 billion today.
