18542981 (number)

18542981 is an odd 8-digits prime number following 18542980 and preceding 18542982. In scientific notation, it is written as 1.8542981 × 10^7. The sum of its digits is 38. It has a total of 1 prime factors and 2 positive divisors. There are 18542980 positive integers (up to 18542981) that are relatively prime to 18542981.

Interesting facts

Basic properties

Name

Name eighteen million five hundred forty-two thousand nine hundred eighty-one

Notation

Scientific notation 1.8542981 × 10^7
Engineering notation 1.8542981 × 10^6

Prime Factorization of 18542981

Prime Factorization 18542981

Composite number
ω Distinct Factors 1
Total number of distinct prime factors
Ω Total Factors 1
Total number of prime factors
rad Radical 18542981
Product of the distinct prime numbers

The prime factorization of 18542981 is 18542981. Since it has a total of 1 prime factors.

Most popular turbo-numbers

6, 4, 16, 59, 645, 895, 8027, 1309, 54365, 4894, 473727, 592000, 5915410, 9052502, 4992781, 64683586, 107368244, 757045661, 5369664130, 9629758081

Basic calculations (n = 18542981)

Multiplication

n×y
n×2 37085962
n×3 55628943
n×4 74171924
n×5 92714905

Division

n÷y
n÷2 9271490.5
n÷3 6180993.6666667
n÷3 4635745.25
n÷5 3708596.2

Exponentiation

ny
n2 343842144366361
n3 6.3758583499847E+21
n4 1.1822742024246E+29
n5 2.1922888072349E+36

Nth Root

y√n
2√n 4306.1561745947
3√n 264.68328604307
4√n 65.621308845486
5√n 28.420774622205

Divisors of 18542981

1, 18542981

2 divisors

τ Total Divisors 2
Total number of the positive divisors of n
σ Sum of Divisors 18542982
Sum of all the positive divisors of n
s Aliquot Sum 1
Sum of the proper positive divisors of n
A Arithmetic Mean 9271491
Returns the sum of divisors (σ(n)) divided by the total number of divisors (τ(n))
G Geometric Mean 4306.1562907075
Returns the nth root of the product of n divisors
H Harmonic Mean 1.9999998921425
Returns the total number of divisors (τ(n)) divided by the sum of the reciprocal of each divisors

The number 18542981 can be divided by 2 positive divisors. The sum of these divisors (counting 18542981) is 18542982, the average is 9271491.

Base conversion 18542981

Base System Value
2 Binary 1000110101111000110000101
3 Ternary 1021220002012002
4 Quaternary 1012233012011
5 Quinary 14221333411
6 Senary 1501235045
8 Octal 106570605
10 Decimal 18542981
12 Duodecimal 6262a85
16 Hexadecimal 11af185
20 Vigesimal 5fhh91
36 Base36 b1fut

Cryptographic Hash Functions

md5 23d277498afaf4865787947cd4fb88c8
sha1 9e628c8879ee30eb4a50b7b66dcb5821a5be07f4
sha256 4976856dca3b88af5d478697716b2347ef13e67cc96f0517752b54264298a255
sha512 dec354fbc51ed229834939883096a09bd44c289a50929c0132e9631eb13a069de4229630e0fef2db048fa5e692676f2caa1e3befce609590fccdb81b588dce73
ripemd-160 68aa751447ddbc0e00af93b9267791d32d8a6311

18542981 as geometric shapes

Circle

Radius = n
Diameter 37085962
Circumference 116508985.77051
Area 1.0802119547359E+15

Sphere

Radius = n
Volume 2.6707133003521E+22
Surface area 4.3208478189437E+15
Circumference 116508985.77051

Square

Length = n
Perimeter 74171924
Area 343842144366361
Diagonal 26223735.217027

Cube

Length = n
Surface area 2063052866198166
Volume 6.3758583499847E+21
Space diagonal 32117385.215784

Equilateral Triangle

Length = n
Perimeter 55628943
Area 1.4888801595649E+14
Altitude 16058692.607892

Triangular Pyramid

Length = n
Surface area 1.4888801595649E+14
Volume 7.5140211252651E+20
Height 8741245.0723422