# 1000000000

## 1,000,000,000 is an even composite number composed of two prime numbers multiplied together.

What does the number 1000000000 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 100 divisors.

1000000000 is an even composite number. It is composed of two distinct prime numbers multiplied together. It has a total of one hundred divisors.

## Prime factorization of 1000000000:

### 29 × 59

(2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 2 × 5 × 5 × 5 × 5 × 5 × 5 × 5 × 5 × 5)

See below for interesting mathematical facts about the number 1000000000 from the Numbermatics database.

### Names of 1000000000

• Cardinal: 1000000000 can be written as One billion.

### Scientific notation

• Scientific notation: 1 × 109

### Factors of 1000000000

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 18
• Sum of prime factors: 7

### Divisors of 1000000000

• Number of divisors d(n): 100
• Complete list of divisors:
• Sum of all divisors σ(n): 2497558338
• Sum of proper divisors (its aliquot sum) s(n): 1497558338
• 1000000000 is an abundant number, because the sum of its proper divisors (1497558338) is greater than itself. Its abundance is 497558338

### Bases of 1000000000

• Binary: 1110111001101011001010000000002
• Base-36: GJDGXS

### Squares and roots of 1000000000

• 1000000000 squared (10000000002) is 1000000000000000000
• 1000000000 cubed (10000000003) is 1000000000000000000000000000
• The square root of 1000000000 is 31622.7766016837
• 1000000000 is a perfect cube number. Its cube root is 1000

### Scales and comparisons

How big is 1000000000?
• 1,000,000,000 seconds is equal to 31 years, 41 weeks, 3 days, 1 hour, 46 minutes, 40 seconds.
• To count from 1 to 1,000,000,000 would take you about sixty-three years!

This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)

• A cube with a volume of 1000000000 cubic inches would be around 83.3 feet tall.

### Recreational maths with 1000000000

• 1000000000 backwards is 0000000001
• 1000000000 is a Harshad number.
• The number of decimal digits it has is: 10
• The sum of 1000000000's digits is 1
• More coming soon!