Base | Representation |
---|---|
bin | 1111100001001… |
… | …11110001111001 |
3 | 100001222011010002 |
4 | 13300213301321 |
5 | 231311430421 |
6 | 20530202345 |
7 | 3140365034 |
oct | 760476171 |
9 | 301864102 |
10 | 130186361 |
11 | 67539a38 |
12 | 377233b5 |
13 | 20c82566 |
14 | 1340c01b |
15 | b668b0b |
hex | 7c27c79 |
130186361 has 2 divisors, whose sum is σ = 130186362. Its totient is φ = 130186360.
The previous prime is 130186351. The next prime is 130186363. The reversal of 130186361 is 163681031.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 106605625 + 23580736 = 10325^2 + 4856^2 .
It is an emirp because it is prime and its reverse (163681031) is a distict prime.
It is a cyclic number.
It is a de Polignac number, because none of the positive numbers 2k-130186361 is a prime.
Together with 130186363, it forms a pair of twin primes.
It is a Chen prime.
It is not a weakly prime, because it can be changed into another prime (130186363) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65093180 + 65093181.
It is an arithmetic number, because the mean of its divisors is an integer number (65093181).
Almost surely, 2130186361 is an apocalyptic number.
It is an amenable number.
130186361 is a deficient number, since it is larger than the sum of its proper divisors (1).
130186361 is an equidigital number, since it uses as much as digits as its factorization.
130186361 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 2592, while the sum is 29.
The square root of 130186361 is about 11409.9237946623. The cubic root of 130186361 is about 506.8216547911.
The spelling of 130186361 in words is "one hundred thirty million, one hundred eighty-six thousand, three hundred sixty-one".
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