# 1161

## 1,161 is an odd composite number composed of two prime numbers multiplied together.

What does the number 1161 look like?

This visualization shows the relationship between its 2 prime factors (large circles) and 8 divisors.

1161 is an odd composite number. It is composed of two distinct prime numbers multiplied together. It has a total of eight divisors.

## Prime factorization of 1161:

### 33 × 43

(3 × 3 × 3 × 43)

See below for interesting mathematical facts about the number 1161 from the Numbermatics database.

### Names of 1161

• Cardinal: 1161 can be written as One thousand, one hundred sixty-one.

### Scientific notation

• Scientific notation: 1.161 × 103

### Factors of 1161

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 4
• Sum of prime factors: 46

### Divisors of 1161

• Number of divisors d(n): 8
• Complete list of divisors:
• Sum of all divisors σ(n): 1760
• Sum of proper divisors (its aliquot sum) s(n): 599
• 1161 is a deficient number, because the sum of its proper divisors (599) is less than itself. Its deficiency is 562

### Bases of 1161

• Binary: 100100010012
• Base-36: W9

### Squares and roots of 1161

• 1161 squared (11612) is 1347921
• 1161 cubed (11613) is 1564936281
• The square root of 1161 is 34.0734500749
• The cube root of 1161 is 10.5101941811

### Scales and comparisons

How big is 1161?
• 1,161 seconds is equal to 19 minutes, 21 seconds.
• To count from 1 to 1,161 would take you about nineteen 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 1161 cubic inches would be around 0.9 feet tall.

### Recreational maths with 1161

• 1161 backwards is 1611
• 1161 is a Harshad number.
• The number of decimal digits it has is: 4
• The sum of 1161's digits is 9
• More coming soon!