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18301 is a prime number
BaseRepresentation
bin100011101111101
3221002211
410131331
51041201
6220421
7104233
oct43575
927084
1018301
1112828
12a711
13843a
146953
155651
hex477d

18301 has 2 divisors, whose sum is σ = 18302. Its totient is φ = 18300.

The previous prime is 18289. The next prime is 18307. The reversal of 18301 is 10381.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10201 + 8100 = 101^2 + 90^2 .

It is a cyclic number.

It is not a de Polignac number, because 18301 - 25 = 18269 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is a plaindrome in base 16.

It is a nialpdrome in base 12.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9150 + 9151.

It is an arithmetic number, because the mean of its divisors is an integer number (9151).

218301 is an apocalyptic number.

18301 is the 61-st centered decagonal number.

It is an amenable number.

18301 is a deficient number, since it is larger than the sum of its proper divisors (1).

18301 is an equidigital number, since it uses as much as digits as its factorization.

18301 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 18301 is about 135.2811886405. The cubic root of 18301 is about 26.3526892178.

Adding to 18301 its reverse (10381), we get a palindrome (28682).

The spelling of 18301 in words is "eighteen thousand, three hundred one".