# 18158

## 18,158 is an even composite number composed of three prime numbers multiplied together.

What does the number 18158 look like?

This visualization shows the relationship between its 3 prime factors (large circles) and 8 divisors.

18158 is an even composite number. It is composed of three distinct prime numbers multiplied together. It has a total of eight divisors.

## Prime factorization of 18158:

### 2 × 7 × 1297

See below for interesting mathematical facts about the number 18158 from the Numbermatics database.

### Names of 18158

• Cardinal: 18158 can be written as Eighteen thousand, one hundred fifty-eight.

### Scientific notation

• Scientific notation: 1.8158 × 104

### Factors of 18158

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 3
• Sum of prime factors: 1306

### Divisors of 18158

• Number of divisors d(n): 8
• Complete list of divisors:
• Sum of all divisors σ(n): 31152
• Sum of proper divisors (its aliquot sum) s(n): 12994
• 18158 is a deficient number, because the sum of its proper divisors (12994) is less than itself. Its deficiency is 5164

### Bases of 18158

• Binary: 1000110111011102
• Base-36: E0E

### Squares and roots of 18158

• 18158 squared (181582) is 329712964
• 18158 cubed (181583) is 5986928000312
• The square root of 18158 is 134.7516233669
• The cube root of 18158 is 26.2838716189

### Scales and comparisons

How big is 18158?
• 18,158 seconds is equal to 5 hours, 2 minutes, 38 seconds.
• To count from 1 to 18,158 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 18158 cubic inches would be around 2.2 feet tall.

### Recreational maths with 18158

• 18158 backwards is 85181
• The number of decimal digits it has is: 5
• The sum of 18158's digits is 23
• More coming soon!