# 18218

## 18,218 is an even composite number composed of two prime numbers multiplied together.

What does the number 18218 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 4 divisors.

18218 is an even composite number. It is composed of two distinct prime numbers multiplied together. It has a total of four divisors.

## Prime factorization of 18218:

### 2 × 9109

See below for interesting mathematical facts about the number 18218 from the Numbermatics database.

### Names of 18218

• Cardinal: 18218 can be written as Eighteen thousand, two hundred eighteen.

### Scientific notation

• Scientific notation: 1.8218 × 104

### Factors of 18218

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 9111

### Divisors of 18218

• Number of divisors d(n): 4
• Complete list of divisors:
• Sum of all divisors σ(n): 27330
• Sum of proper divisors (its aliquot sum) s(n): 9112
• 18218 is a deficient number, because the sum of its proper divisors (9112) is less than itself. Its deficiency is 9106

### Bases of 18218

• Binary: 1000111001010102
• Base-36: E22

### Squares and roots of 18218

• 18218 squared (182182) is 331895524
• 18218 cubed (182183) is 6046472656232
• The square root of 18218 is 134.9740715841
• The cube root of 18218 is 26.3127899739

### Scales and comparisons

How big is 18218?
• 18,218 seconds is equal to 5 hours, 3 minutes, 38 seconds.
• To count from 1 to 18,218 would take you about five hours.

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 18218 cubic inches would be around 2.2 feet tall.

### Recreational maths with 18218

• 18218 backwards is 81281
• The number of decimal digits it has is: 5
• The sum of 18218's digits is 20
• More coming soon!