1998721845 is an odd 10-digits composite number following 1998721844
and preceding 1998721846 . In scientific notation, it is written as 1.998721845 × 10^9.
The sum of its digits is 54. It has a total of 4 prime factors and 16 positive divisors.
There are 1065984912 positive integers (up to 1998721845) that are relatively prime to 1998721845.
1998721845 has 16 divisors, whose sum is 3553283520
The reverse of 1998721845 is 5481278991
Previous prime number is 9
Is Prime? no Number parity odd Number length 10 Sum of Digits 54 Digital Root 9
Name
one billion nine hundred ninety-eight million seven hundred twenty-one thousand eight hundred forty-five
Scientific notation
1.998721845 × 10^9
Engineering notation
1.998721845 × 10^9
Prime Factorization
5 × 3 × 9 × 14805347
Composite number
ω Distinct Factors
4 Total number of distinct prime factors
Ω Total Factors
4 Total number of prime factors
rad Radical
1998721845 Product of the distinct prime numbers
The prime factorization of 1998721845 is 5 × 3 × 9 × 14805347.
Since it has a total of 4 prime factors.
7 , 1 , 30 , 98 , 374 , 491 , 7236 , 3820 , 687 , 99806 , 538884 , 982889 , 6395603 , 6224782 , 1822037 , 57756087 , 612040508 , 551501933 , 8962472005 , 9926541414
n×2
3997443690
n×3
5996165535
n×4
7994887380
n×5
9993609225
n÷2
999360922.5
n÷3
666240615
n÷3
499680461.25
n÷5
399744369
n2
3994889013680204025
n3
7.9846719399931E+27
n4
1.5959138231623E+37
n5
3.1897878210919E+46
2 √n44707.0670588
3 √n1259.6525969678
4 √n211.44045747869
5 √n72.468700191234
1 , 3 , 5 , 9 , 15 , 27 , 45 , 135 , 14805347 , 44416041 , 74026735 , 133248123 , 222080205 , 399744369 , 666240615 , 1998721845
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
-1998721844 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 1998721845 can be divided by 16 positive divisors.
The sum of these divisors (counting 1998721845) is 1, the average is 0.0625.
Base
System
Value
2
Binary
1110111001000100001001100110101
3
Ternary
12011021221120221000
4
Quaternary
1313020201030311
5
Quinary
13043133044340
6
Senary
530155313513
8
Octal
16710411465
10
Decimal
1998721845
12
Duodecimal
47944b899
16
Hexadecimal
77221335
20
Vigesimal
1b4c04c5
36
Base36
x1zjn9
md5
344941ffb567f9d8d5bab5624e8090f8
sha1
7f5ce289a5ae65f68d9dd144e7097f45f22a08a6
sha256
851b9980868c39ae58c91c9c39daf0055be3529d8e43be194f887eb75cf5ef49
sha512
a67e3afe12d5ca8127844081eb8c293c4bf83714e9139e1d845dc53d11cae454a4c5c895db069cd8dc704a33f4e14e4d553d73e40618187ec82c3ec870d21473
ripemd-160
ea8c7acf92cf3d42dcd193517d028bb88fddc7d8
Diameter
3997443690
Circumference
12558339729.643
Area
1.2550313977284E+19
Volume
3.3446115610676E+28
Surface area
5.0201255909137E+19
Circumference
12558339729.643
Perimeter
7994887380
Area
3994889013680204025
Diagonal
2826619540.6104
Surface area
2.3969334082081E+19
Volume
7.9846719399931E+27
Space diagonal
3461887785.7378
Perimeter
5996165535
Area
1.7298376855732E+18
Altitude
1730943892.8689
Surface area
1.7298376855732E+18
Volume
9.4100261238651E+26
Height
942206513.53679