1999870821 is an odd 10-digits composite number following 1999870820
and preceding 1999870822 . In scientific notation, it is written as 1.999870821 × 10^9.
The sum of its digits is 54. It has a total of 4 prime factors and 16 positive divisors.
There are 1141050240 positive integers (up to 1999870821) that are relatively prime to 1999870821.
1999870821 has 16 divisors, whose sum is 2395812720
The reverse of 1999870821 is 1280789991
Previous prime number is 893
Is Prime? no
Number parity odd
Number length 10
Sum of Digits 54
Digital Root 9
Name
one billion nine hundred ninety-nine million eight hundred seventy thousand eight hundred twenty-one
Scientific notation
1.999870821 × 10^9
Engineering notation
1.999870821 × 10^9
Prime Factorization
9 × 13 × 893 × 19141
Composite number
ω
Distinct Factors
4
Total number of distinct prime factors
Ω
Total Factors
4
Total number of prime factors
rad
Radical
1999870821
Product of the distinct prime numbers
The prime factorization of 1999870821 is 9 × 13 × 893 × 19141.
Since it has a total of 4 prime factors.
2 , 8 , 35 , 71 , 218 , 806 , 7367 , 4771 , 46841 , 94679 , 984663 , 460009 , 6143754 , 5050502 , 42513730 , 25700723 , 653500454 , 500538088 , 2037416501 , 898774109
n×2
3999741642
n×3
5999612463
n×4
7999483284
n×5
9999354105
n÷2
999935410.5
n÷3
666623607
n÷3
499967705.25
n÷5
399974164.2
n2
3999483300687214041
n3
7.9984499521211E+27
n4
1.5995866672476E+37
n5
3.1989667014891E+46
2 √n
44719.915261548
3 √n
1259.8939234206
4 √n
211.47083785134
5 √n
72.477030080458
1 , 9 , 13 , 117 , 893 , 8037 , 11609 , 19141 , 104481 , 172269 , 248833 , 2239497 , 17092913 , 153836217 , 222207869 , 1999870821
16 divisors
τ
Total Divisors
16
Total number of the positive divisors of n
σ
Sum of Divisors
1
Sum of all the positive divisors of n
s
Aliquot Sum
-1999870820
Sum of the proper positive divisors of n
A
Arithmetic Mean
0.0625
Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G
Geometric Mean
1
Returns the nth root of the product of n divisors
H
Harmonic Mean
16
Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 1999870821 can be divided by 16 positive divisors.
The sum of these divisors (counting 1999870821) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1110111001100111001101101100101
3
Ternary
12011101002222000200
4
Quaternary
1313030321231211
5
Quinary
13043431331241
6
Senary
530240101113
8
Octal
16714715545
10
Decimal
1999870821
12
Duodecimal
479904799
16
Hexadecimal
77339b65
20
Vigesimal
1b4j3h11
36
Base36
x2o679
md5
b761b2e69ccb498eeb14f0e5aefc55c2
sha1
97cc56cedc4788b2177f6147b85528c41bdaf239
sha256
6fd67d7b02ee70b7313a0bbcd2cc9a6524b70ff603460ce0efa7fd98258defb5
sha512
473b3a24147c3b95f5c6999f2b1a5e8eaf601dfc078ca70cb27cbd1229c320f797f1a6361daf424924776e9bdb96941559b9fa0af9a5f0f87a99828039794a5a
ripemd-160
ec6917b27778ba14411ca0141dbf4aceb85825bf
Diameter
3999741642
Circumference
12565558958.764
Area
1.2564747355594E+19
Volume
3.3503828812919E+28
Surface area
5.0258989422376E+19
Circumference
12565558958.764
Perimeter
7999483284
Area
3999483300687214041
Diagonal
2828244438.0524
Surface area
2.3996899804123E+19
Volume
7.9984499521211E+27
Space diagonal
3463877870.5465
Perimeter
5999612463
Area
1.7318270702034E+18
Altitude
1731938935.2732
Surface area
1.7318270702034E+18
Volume
9.4262636668768E+26
Height
942748146.01747