161997907 is an odd 9-digits prime number following 161997906
and preceding 161997908 . In scientific notation, it is written as 1.61997907 × 10^8.
The sum of its digits is 49. It has a total of 1 prime factors and 2 positive divisors.
There are 161997906 positive integers (up to 161997907) that are relatively prime to 161997907.
161997907 has 2 divisors, whose sum is 161997908
The reverse of 161997907 is 709799161
Previous prime number is 1
Is Prime? yes Number parity odd Number length 9 Sum of Digits 49 Digital Root 4
Name
one hundred sixty-one million nine hundred ninety-seven thousand nine hundred seven
Scientific notation
1.61997907 × 10^8
Engineering notation
1.61997907 × 10^6
Prime Factorization
161997907
Composite number
ω Distinct Factors
1 Total number of distinct prime factors
Ω Total Factors
1 Total number of prime factors
rad Radical
161997907 Product of the distinct prime numbers
The prime factorization of 161997907 is 161997907.
Since it has a total of 1 prime factors.
7 , 9 , 7 , 24 , 530 , 878 , 860 , 2914 , 16282 , 43348 , 862162 , 184804 , 3964398 , 3867813 , 21476712 , 21079752 , 321906448 , 10787507 , 3745936732 , 2016785845
n×2
323995814
n×3
485993721
n×4
647991628
n×5
809989535
n÷2
80998953.5
n÷3
53999302.333333
n÷3
40499476.75
n÷5
32399581.4
n2
26243321872380649
n3
4.251363216053E+24
n4
6.8871194289737E+32
n5
1.1156989327528E+41
2 √n12727.839840287
3 √n545.13383016459
4 √n112.81772839535
5 √n43.843163259211
2 divisors
τ Total Divisors
2 Total number of the positive divisors of n
σ Sum of Divisors
161997908 Sum of all the positive divisors of n
s Aliquot Sum
1 Sum of the proper positive divisors of n
A Arithmetic Mean
80998954 Returns the sum of divisors (σ(n )) divided by the total number of divisors (τ(n ))
G Geometric Mean
12727.839879571 Returns the nth root of the product of n divisors
H Harmonic Mean
1.9999999876542 Returns the total number of divisors (τ(n )) divided by the sum of the reciprocal of each divisors
The number 161997907 can be divided by 2 positive divisors.
The sum of these divisors (counting 161997907) is 161997908, the average is 80998954.
Base
System
Value
2
Binary
1001101001111110010001010011
3
Ternary
102021211100100111
4
Quaternary
21221332101103
5
Quinary
312432413112
6
Senary
24024102151
8
Octal
1151762123
10
Decimal
161997907
12
Duodecimal
46304957
16
Hexadecimal
9a7e453
20
Vigesimal
2ac9ef7
36
Base36
2og6dv
md5
5ed31737d71fd3a512ea6b0dddd1fcb1
sha1
0503332a99e8582d929b3f7327261917d4333958
sha256
ebde673db57b48bf1337d41f87e414f75304ab48d291003bf038d54bfd3fa987
sha512
0b9201724cf196f56d134c6b5bfff22114312ec0c87f6a0a979fa4d54592d52b87e22753b317723900ae98e94d05e062e5ac27db45708edb6fa66e07fefc5512
ripemd-160
892a8949a5c4a0d68c20a27f4aaa2f361114b359
Diameter
323995814
Circumference
1017862869.0562
Area
8.2445827200063E+16
Volume
1.7808068596392E+25
Surface area
3.2978330880025E+17
Circumference
1017862869.0562
Perimeter
647991628
Area
26243321872380649
Diagonal
229099637.15546
Surface area
157459931234283894
Volume
4.251363216053E+24
Space diagonal
280588605.64382
Perimeter
485993721
Area
1.1363691710587E+16
Altitude
140294302.82191
Surface area
1.1363691710587E+16
Volume
5.0102795989302E+23
Height
76366545.718485