There are a total of nine zeros in a billion. The next natural number after the figures 999,999,999 and before 1,000,000,001 is 1,000,000,000. It is known as a billion in the American English language.
One billion or 1,000,000,000 can also be referred as milliard, although this term is hardly ever used in the English language, but is used regularly in other languages. According to the English language billion means million millions or 1,000,000,000,000, rather than American thousand million. In scientific notations, 109 are denoted as one thousand million and physical quantities can be denoted by expressing SI prefix giga.
One billion or 1,000,000,000 can also be referred as milliard, although this term is hardly ever used in the English language, but is used regularly in other languages. According to the English language billion means million millions or 1,000,000,000,000, rather than American thousand million. In scientific notations, 109 are denoted as one thousand million and physical quantities can be denoted by expressing SI prefix giga.