18068191 has 2 divisors, whose sum is σ = 18068192. Its totient is φ = 18068190.

The previous prime is 18068159. The next prime is 18068201. The reversal of 18068191 is 19186081.

It is a strong prime. It is also a bemirp because it and its reverse can be mirrored producing other two distinct primes, 16189081 and 18098161.

It is a cyclic number.

It is not a de Polignac number, because 18068191 - 2⁵ = 18068159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18068591) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9034095 + 9034096.

It is an arithmetic number, because the mean of its divisors is an integer number (9034096).

Almost surely, 2^18068191 is an apocalyptic number.

18068191 is a deficient number, since it is larger than the sum of its proper divisors (1).

18068191 is an equidigital number, since it uses as much as digits as its factorization.

18068191 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 34.

The square root of 18068191 is about 4250.6694766825. The cubic root of 18068191 is about 262.4046686332.

The spelling of 18068191 in words is "eighteen million, sixty-eight thousand, one hundred ninety-one".