1981721749 (number)

1981721749 is an odd 10-digits composite number following 1981721748 and preceding 1981721750. In scientific notation, it is written as 1.981721749 × 10^9. The sum of its digits is 49. It has a total of 3 prime factors and 8 positive divisors. There are 1686392568 positive integers (up to 1981721749) that are relatively prime to 1981721749.

Interesting facts

Basic properties

Name

Name one billion nine hundred eighty-one million seven hundred twenty-one thousand seven hundred forty-nine

Notation

Scientific notation 1.981721749 × 10^9
Engineering notation 1.981721749 × 10^9

Prime Factorization of 1981721749

Prime Factorization 49 × 139 × 290959

Composite number
ω Distinct Factors 3
Total number of distinct prime factors
Ω Total Factors 3
Total number of prime factors
rad Radical 1981721749
Product of the distinct prime numbers

The prime factorization of 1981721749 is 49 × 139 × 290959. Since it has a total of 3 prime factors.

Most popular turbo-numbers

Basic calculations (n = 1981721749)

Multiplication

n×y
n×2 3963443498
n×3 5945165247
n×4 7926886996
n×5 9908608745

Division

n÷y
n÷2 990860874.5
n÷3 660573916.33333
n÷3 495430437.25
n÷5 396344349.8

Exponentiation

ny
n2 3927221090459619001
n3 7.7826594480953E+27
n4 1.5423065493351E+37
n5 3.0564224324425E+46

Nth Root

y√n
2√n 44516.53343422
3√n 1256.0711053924
4√n 210.98941545542
5√n 72.345002359207

Divisors of 1981721749

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 -1981721748
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 1981721749 can be divided by 8 positive divisors. The sum of these divisors (counting 1981721749) is 1, the average is 0.125.

Base conversion 1981721749

Base System Value
2 Binary 1110110000111101010110010010101
3 Ternary 12010002221220011211
4 Quaternary 1312013222302111
5 Quinary 13024310043444
6 Senary 524351101421
8 Octal 16607526225
10 Decimal 1981721749
12 Duodecimal 473811871
16 Hexadecimal 761eac95
20 Vigesimal 1aj5f479
36 Base36 wrv6ad

Cryptographic Hash Functions

md5 b61017ba7cc4a812ae337f7aeee56f94
sha1 423592c100a6b24ee8e513d19fbd319c528a31ed
sha256 3c2fac75ef2ab99cd2a5d7ea77b02a7ee06e85a7dbe211e107a49696e8abb170
sha512 bca45e996d2d26f77013f0b041365c34bc0be0db0dfc09ad685e0228b7486a30bdb979a69011353b71b3c1456a96778e30a24bdf9245c41513310d8ddb2750db
ripemd-160 7a194f1aa543c056bc772fb248a1253137ca7fb8

1981721749 as geometric shapes

Circle

Radius = n
Diameter 3963443498
Circumference 12451524976.235
Area 1.2337728926811E+19

Sphere

Radius = n
Volume 3.259992766337E+28
Surface area 4.9350915707243E+19
Circumference 12451524976.235

Square

Length = n
Perimeter 7926886996
Area 3927221090459619001
Diagonal 2802577774.2855

Cube

Length = n
Surface area 2.3563326542758E+19
Volume 7.7826594480953E+27
Space diagonal 3432442755.7323

Equilateral Triangle

Length = n
Perimeter 5945165247
Area 1.700536615308E+18
Altitude 1716221377.8661

Triangular Pyramid

Length = n
Surface area 1.700536615308E+18
Volume 9.1719521190229E+26
Height 934192591.42851