18495361 has 2 divisors, whose sum is σ = 18495362. Its totient is φ = 18495360.

The previous prime is 18495349. The next prime is 18495403. The reversal of 18495361 is 16359481.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9828225 + 8667136 = 3135^2 + 2944^2 .

It is an emirp because it is prime and its reverse (16359481) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18495361 - 2⁵ = 18495329 is a prime.

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 18495361.

It is not a weakly prime, because it can be changed into another prime (18495311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9247680 + 9247681.

It is an arithmetic number, because the mean of its divisors is an integer number (9247681).

Almost surely, 2^18495361 is an apocalyptic number.

It is an amenable number.

18495361 is a deficient number, since it is larger than the sum of its proper divisors (1).

18495361 is an equidigital number, since it uses as much as digits as its factorization.

18495361 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 25920, while the sum is 37.

The square root of 18495361 is about 4300.6233269144. The cubic root of 18495361 is about 264.4565151860.

The spelling of 18495361 in words is "eighteen million, four hundred ninety-five thousand, three hundred sixty-one".