18608197 has 2 divisors, whose sum is σ = 18608198. Its totient is φ = 18608196.

The previous prime is 18608179. The next prime is 18608221. The reversal of 18608197 is 79180681.

Together with previous prime (18608179) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17422276 + 1185921 = 4174^2 + 1089^2 .

It is a cyclic number.

It is not a de Polignac number, because 18608197 - 2¹⁵ = 18575429 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18608297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9304098 + 9304099.

It is an arithmetic number, because the mean of its divisors is an integer number (9304099).

Almost surely, 2^18608197 is an apocalyptic number.

It is an amenable number.

18608197 is a deficient number, since it is larger than the sum of its proper divisors (1).

18608197 is an equidigital number, since it uses as much as digits as its factorization.

18608197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 40.

The square root of 18608197 is about 4313.7219428239. The cubic root of 18608197 is about 264.9932216137.

The spelling of 18608197 in words is "eighteen million, six hundred eight thousand, one hundred ninety-seven".