# 1639

## 1,639 is an odd composite number composed of two prime numbers multiplied together.

What does the number 1639 look like?

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

1639 is an odd composite number. It is composed of two distinct prime numbers multiplied together. It has a total of four divisors.

## Prime factorization of 1639:

### 11 × 149

See below for interesting mathematical facts about the number 1639 from the Numbermatics database.

### Names of 1639

• Cardinal: 1639 can be written as One thousand, six hundred thirty-nine.

### Scientific notation

• Scientific notation: 1.639 × 103

### Factors of 1639

• Number of distinct prime factors ω(n): 2
• Total number of prime factors Ω(n): 2
• Sum of prime factors: 160

### Divisors of 1639

• Number of divisors d(n): 4
• Complete list of divisors:
• Sum of all divisors σ(n): 1800
• Sum of proper divisors (its aliquot sum) s(n): 161
• 1639 is a deficient number, because the sum of its proper divisors (161) is less than itself. Its deficiency is 1478

### Bases of 1639

• Binary: 110011001112
• Base-36: 19J

### Squares and roots of 1639

• 1639 squared (16392) is 2686321
• 1639 cubed (16393) is 4402880119
• The square root of 1639 is 40.4845649597
• The cube root of 1639 is 11.7903396949

### Scales and comparisons

How big is 1639?
• 1,639 seconds is equal to 27 minutes, 19 seconds.
• To count from 1 to 1,639 would take you about twenty-seven 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 1639 cubic inches would be around 1 feet tall.

### Recreational maths with 1639

• 1639 backwards is 9361
• The number of decimal digits it has is: 4
• The sum of 1639's digits is 19
• More coming soon!