18093197 has 2 divisors, whose sum is σ = 18093198. Its totient is φ = 18093196.

The previous prime is 18093191. The next prime is 18093199. The reversal of 18093197 is 79139081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10797796 + 7295401 = 3286^2 + 2701^2 .

It is a cyclic number.

It is not a de Polignac number, because 18093197 - 2¹⁶ = 18027661 is a prime.

Together with 18093199, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18093197.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18093191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9046598 + 9046599.

It is an arithmetic number, because the mean of its divisors is an integer number (9046599).

Almost surely, 2^18093197 is an apocalyptic number.

It is an amenable number.

18093197 is a deficient number, since it is larger than the sum of its proper divisors (1).

18093197 is an equidigital number, since it uses as much as digits as its factorization.

18093197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 38.

The square root of 18093197 is about 4253.6098786795. The cubic root of 18093197 is about 262.5256670291.

The spelling of 18093197 in words is "eighteen million, ninety-three thousand, one hundred ninety-seven".