18360193 has 2 divisors, whose sum is σ = 18360194. Its totient is φ = 18360192.

The previous prime is 18360149. The next prime is 18360197. The reversal of 18360193 is 39106381.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18122049 + 238144 = 4257^2 + 488^2 .

It is an emirp because it is prime and its reverse (39106381) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18360193 - 2¹³ = 18352001 is a prime.

It is not a weakly prime, because it can be changed into another prime (18360197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9180096 + 9180097.

It is an arithmetic number, because the mean of its divisors is an integer number (9180097).

Almost surely, 2^18360193 is an apocalyptic number.

It is an amenable number.

18360193 is a deficient number, since it is larger than the sum of its proper divisors (1).

18360193 is an equidigital number, since it uses as much as digits as its factorization.

18360193 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 31.

The square root of 18360193 is about 4284.8795782379. The cubic root of 18360193 is about 263.8107047142.

The spelling of 18360193 in words is "eighteen million, three hundred sixty thousand, one hundred ninety-three".