# 1818

## 1,818 is an even composite number composed of three prime numbers multiplied together.

What does the number 1818 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 12 divisors.

1818 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of twelve divisors.

## Prime factorization of 1818:

### 2 × 32 × 101

(2 × 3 × 3 × 101)

See below for interesting mathematical facts about the number 1818 from the Numbermatics database.

### Names of 1818

• Cardinal: 1818 can be written as One thousand, eight hundred eighteen.

### Scientific notation

• Scientific notation: 1.818 × 103

### Factors of 1818

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 106

### Divisors of 1818

• Number of divisors d(n): 12
• Complete list of divisors:
• Sum of all divisors σ(n): 3978
• Sum of proper divisors (its aliquot sum) s(n): 2160
• 1818 is an abundant number, because the sum of its proper divisors (2160) is greater than itself. Its abundance is 342

### Bases of 1818

• Binary: 111000110102
• Base-36: 1EI

### Squares and roots of 1818

• 1818 squared (18182) is 3305124
• 1818 cubed (18183) is 6008715432
• The square root of 1818 is 42.6380112107
• The cube root of 1818 is 12.2048175903

### Scales and comparisons

How big is 1818?
• 1,818 seconds is equal to 30 minutes, 18 seconds.
• To count from 1 to 1,818 would take you about thirty minutes.

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 1818 cubic inches would be around 1 feet tall.

### Recreational maths with 1818

• 1818 backwards is 8181
• 1818 is a Harshad number.
• The number of decimal digits it has is: 4
• The sum of 1818's digits is 18
• More coming soon!