18353 has 2 divisors, whose sum is σ = 18354. Its totient is φ = 18352.

The previous prime is 18341. The next prime is 18367. The reversal of 18353 is 35381.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10609 + 7744 = 103^2 + 88^2 .

18353 is a truncatable prime.

It is an emirp because it is prime and its reverse (35381) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18353 - 2⁶ = 18289 is a prime.

It is a Chen prime.

It is a plaindrome in base 15.

It is a nialpdrome in base 12.

It is not a weakly prime, because it can be changed into another prime (18313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9176 + 9177.

It is an arithmetic number, because the mean of its divisors is an integer number (9177).

2¹⁸³⁵³ is an apocalyptic number.

It is an amenable number.

18353 is a deficient number, since it is larger than the sum of its proper divisors (1).

18353 is an equidigital number, since it uses as much as digits as its factorization.

18353 is an evil number, because the sum of its binary digits is even.

The product of its digits is 360, while the sum is 20.

The square root of 18353 is about 135.4732445910. The cubic root of 18353 is about 26.3776249044.

The spelling of 18353 in words is "eighteen thousand, three hundred fifty-three".