# 163

## 163 is a prime number. Like all primes greater than two, it is odd and has no factors apart from itself and one.

What does the number 163 look like?

As a prime, it is not composed of any other numbers and has no internal structure.

163 is a prime number. Like all primes (except two), it is an odd number.

## Prime factorization of 163:

### 163

See below for interesting mathematical facts about the number 163 from the Numbermatics database.

### Names of 163

• Cardinal: 163 can be written as One hundred sixty-three.

### Scientific notation

• Scientific notation: 1.63 × 102

### Factors of 163

• Number of distinct prime factors ω(n): 1
• Total number of prime factors Ω(n): 1
• Sum of prime factors: 163

### Divisors of 163

• Number of divisors d(n): 2
• Complete list of divisors:
• Sum of all divisors σ(n): 164
• Sum of proper divisors (its aliquot sum) s(n): 1
• 163 is a deficient number, because the sum of its proper divisors (1) is less than itself. Its deficiency is 162

### Bases of 163

• Binary: 101000112
• Base-36: 4J

### Squares and roots of 163

• 163 squared (1632) is 26569
• 163 cubed (1633) is 4330747
• The square root of 163 is 12.7671453349
• The cube root of 163 is 5.4625555713

### Scales and comparisons

How big is 163?
• 163 seconds is equal to 2 minutes, 43 seconds.
• To count from 1 to 163 would take you about twenty-one seconds.

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 163 cubic inches would be around 0.5 feet tall.

### Recreational maths with 163

• 163 backwards is 361
• The number of decimal digits it has is: 3
• The sum of 163's digits is 10
• More coming soon!