1991485 is an odd 7-digits composite number following 1991484
and preceding 1991486 . In scientific notation, it is written as 1.991485 × 10^6.
The sum of its digits is 37. It has a total of 3 prime factors and 8 positive divisors.
There are 1509264 positive integers (up to 1991485) that are relatively prime to 1991485.
1991485 has 8 divisors, whose sum is 2515680
The reverse of 1991485 is 5841991
Previous prime number is 19
Is Prime? no
Number parity odd
Number length 7
Sum of Digits 37
Digital Root 1
Name
one million nine hundred ninety-one thousand four hundred eighty-five
Scientific notation
1.991485 × 10^6
Engineering notation
1.991485 × 10^6
Prime Factorization
5 × 19 × 20963
Composite number
ω
Distinct Factors
3
Total number of distinct prime factors
Ω
Total Factors
3
Total number of prime factors
rad
Radical
1991485
Product of the distinct prime numbers
The prime factorization of 1991485 is 5 × 19 × 20963.
Since it has a total of 3 prime factors.
8 , 7 , 57 , 23 , 745 , 640 , 18 , 7734 , 70612 , 6707 , 807082 , 687424 , 8808848 , 274426 , 71548654 , 75566395 , 214056627 , 172681438 , 8286627348 , 5325072459
n×2
3982970
n×3
5974455
n×4
7965940
n×5
9957425
n÷2
995742.5
n÷3
663828.33333333
n÷3
497871.25
n÷5
398297
n2
3966012505225
n3
7898254413968009125
n4
1.5729255191601E+25
n5
3.1324575775246E+31
2 √n
1411.1998441043
3 √n
125.81304683953
4 √n
37.565939947036
5 √n
18.190113458348
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
-1991484
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 1991485 can be divided by 8 positive divisors.
The sum of these divisors (counting 1991485) is 1, the average is 0.125.
Base
System
Value
2
Binary
111100110001100111101
3
Ternary
10202011210201
4
Quaternary
13212030331
5
Quinary
1002211420
6
Senary
110403501
8
Octal
7461475
10
Decimal
1991485
12
Duodecimal
800591
16
Hexadecimal
1e633d
20
Vigesimal
c8ie5
36
Base36
16on1
md5
58ba7ffb18d4ec714e17f3a48f38cd96
sha1
bcfdf45d8ea8ec41ee2a72d374163c286cf332d9
sha256
a8714e12c33a503ae371764e8f6b55085a07b7ad28dc3f28e771fbb3de3ffe54
sha512
ed4df427eb60bcf7be35b8063b4ed4296e97b8b2d605761d9e6137f51fec6b93ab6a7cc68a91d3bd394e168f17d7c35f6aff684ff1b04774071488a07afa0575
ripemd-160
7f7e7d411f3f7743cefa84c8bd1cdfe1baaae571
Diameter
3982970
Circumference
12512869.291469
Area
12459595750460
Volume
3.308413072414E+19
Surface area
49838383001840
Circumference
12512869.291469
Perimeter
7965940
Area
3966012505225
Diagonal
2816385.0962626
Surface area
23796075031350
Volume
7898254413968009125
Space diagonal
3449353.2025113
Perimeter
5974455
Area
1717333790625.8
Altitude
1724676.6012557
Surface area
1717333790625.8
Volume
9.3081820927556E+17
Height
938795.03208753