MathBabbler introduced the Cartesian coordinate system during class on 2 February 2010. The Cartesian coordinate system was invented in the year

`by French mathematician/philosopher Rene Descartes.`

1637MathBabbler Number Analyst (MBNA) output: ========================================= 1637 is a natural, whole, integer 1637 is odd 1637 proper divisors are: 1, 1637 is deficient (sum of divisors is 1) 1637 is unhappy 1637 is not a Harshad number 1637 is prime ...Pythagorean ...Right-truncatable ...Eisenstein 1637 is the sum of 15 consecutive primes 1637 = 73 + 79 + 83 + 89 + 97 + 101 + 103 + 107 + 109 + 113 + 127 + 131 + 137 + 139 + 149 1637 in octal is 03145 1637 in hexadecimal is 0x665 1637 in binary is 11001100101 (is evil) 1637 nearest square numbers: -37...44 (1600...1681 [41]) sqrt(1637) = 40.4599 ln(1637) = 7.40062 log(1637) = 3.21405 1637 reciprocal is .00061087354917532070861331704337 1637! is 2.90909e+4552 1637 is 521.073 Pi years 1637 is 81 score and 17 years 1637 written as a Roman numeral is MDCXXXVII

`is a triple-X Roman numeral.`

1637

`= 819^2 - 818^2 and 819 + 818 =`

1637

1637

**Creator:** Gerald Thurman
[gthurman@gmail.com]

**Created:** 03 February 2010

This work is licensed under a Creative Commons Attribution 3.0 United States License.