1918443381 is an odd 10-digits composite number following 1918443380
and preceding 1918443382 . In scientific notation, it is written as 1.918443381 × 10^9.
The sum of its digits is 42. It has a total of 3 prime factors and 8 positive divisors.
There are 1272534912 positive integers (up to 1918443381) that are relatively prime to 1918443381.
1918443381 has 8 divisors, whose sum is 2570779200
The reverse of 1918443381 is 1833448191
Previous prime number is 199
Is Prime? no Number parity odd Number length 10 Sum of Digits 42 Digital Root 6
Name
one billion nine hundred eighteen million four hundred forty-three thousand three hundred eighty-one
Scientific notation
1.918443381 × 10^9
Engineering notation
1.918443381 × 10^9
Prime Factorization
3 × 199 × 3213473
Composite number
ω Distinct Factors
3 Total number of distinct prime factors
Ω Total Factors
3 Total number of prime factors
rad Radical
1918443381 Product of the distinct prime numbers
The prime factorization of 1918443381 is 3 × 199 × 3213473.
Since it has a total of 3 prime factors.
5 , 9 , 61 , 80 , 374 , 531 , 2615 , 731 , 93907 , 35939 , 487424 , 119019 , 2649017 , 8002687 , 49042396 , 78887654 , 958577193 , 372977512 , 8422456339 , 5723412306
n×2
3836886762
n×3
5755330143
n×4
7673773524
n×5
9592216905
n÷2
959221690.5
n÷3
639481127
n÷3
479610845.25
n÷5
383688676.2
n2
3680425006102711161
n3
7.0606869922246E+27
n4
1.3545528225546E+37
n5
2.5986328966448E+46
2 √n43800.038595873
3 √n1242.5570242658
4 √n209.28458757365
5 √n71.876976007609
8 divisors
τ Total Divisors
8 Total number of the positive divisors of n
σ Sum of Divisors
1 Sum of all the positive divisors of n
s Aliquot Sum
-1918443380 Sum of the proper positive divisors of n
A Arithmetic Mean
0.125 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
8 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 1918443381 can be divided by 8 positive divisors.
The sum of these divisors (counting 1918443381) is 1, the average is 0.125.
Base
System
Value
2
Binary
1110010010110010001111101110101
3
Ternary
11221200220000120120
4
Quaternary
1302112101331311
5
Quinary
12412110142011
6
Senary
514210522153
8
Octal
16226217565
10
Decimal
1918443381
12
Duodecimal
456596359
16
Hexadecimal
72591f75
20
Vigesimal
19ja5891
36
Base36
vq6wdx
md5
4eff518ff0ac746925e70c601e064c98
sha1
87ef11b45c9966a0e2263e51f644e259ccba2228
sha256
f9b590b7ba63808dad4b3f1ac114fc7c062893df76afbf54489fc597e828fb2e
sha512
f83597c32e5012c9a4f26de1e754317e2a0b36c8c6a1fe19eedcd0792ba66c6ba00ee12c9baeebbd2c7f8649927199d7687a38a4b8d5f6d83a2491c78177f160
ripemd-160
002a81e554a7d3a0b24d64c680fb8f24067b7fa5
Diameter
3836886762
Circumference
12053935264.155
Area
1.156239616126E+19
Volume
2.9575736512093E+28
Surface area
4.6249584645042E+19
Circumference
12053935264.155
Perimeter
7673773524
Area
3680425006102711161
Diagonal
2713088648.0551
Surface area
2.2082550036616E+19
Volume
7.0606869922246E+27
Space diagonal
3322841407.3362
Perimeter
5755330143
Area
1.5936707760042E+18
Altitude
1661420703.6681
Surface area
1.5936707760042E+18
Volume
8.3210994200628E+26
Height
904362882.68503