# 1845

## 1,845 is an odd composite number composed of three prime numbers multiplied together.

What does the number 1845 look like?

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

1845 is an odd composite number. It is composed of three distinct prime numbers multiplied together. It has a total of twelve divisors.

## Prime factorization of 1845:

### 32 × 5 × 41

(3 × 3 × 5 × 41)

See below for interesting mathematical facts about the number 1845 from the Numbermatics database.

### Names of 1845

• Cardinal: 1845 can be written as One thousand, eight hundred forty-five.

### Scientific notation

• Scientific notation: 1.845 × 103

### Factors of 1845

• Number of distinct prime factors ω(n): 3
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 49

### Divisors of 1845

• Number of divisors d(n): 12
• Complete list of divisors:
• Sum of all divisors σ(n): 3276
• Sum of proper divisors (its aliquot sum) s(n): 1431
• 1845 is a deficient number, because the sum of its proper divisors (1431) is less than itself. Its deficiency is 414

### Bases of 1845

• Binary: 111001101012
• Base-36: 1F9

### Squares and roots of 1845

• 1845 squared (18452) is 3404025
• 1845 cubed (18453) is 6280426125
• The square root of 1845 is 42.9534631899
• The cube root of 1845 is 12.2649408147

### Scales and comparisons

How big is 1845?
• 1,845 seconds is equal to 30 minutes, 45 seconds.
• To count from 1 to 1,845 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 1845 cubic inches would be around 1 feet tall.

### Recreational maths with 1845

• 1845 backwards is 5481
• The number of decimal digits it has is: 4
• The sum of 1845's digits is 18
• More coming soon!