18495853 has 2 divisors, whose sum is σ = 18495854. Its totient is φ = 18495852.

The previous prime is 18495821. The next prime is 18495859. The reversal of 18495853 is 35859481.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18003049 + 492804 = 4243^2 + 702^2 .

It is a cyclic number.

It is not a de Polignac number, because 18495853 - 2⁵ = 18495821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18495859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9247926 + 9247927.

It is an arithmetic number, because the mean of its divisors is an integer number (9247927).

Almost surely, 2^18495853 is an apocalyptic number.

It is an amenable number.

18495853 is a deficient number, since it is larger than the sum of its proper divisors (1).

18495853 is an equidigital number, since it uses as much as digits as its factorization.

18495853 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 172800, while the sum is 43.

The square root of 18495853 is about 4300.6805275444. The cubic root of 18495853 is about 264.4588601245.

The spelling of 18495853 in words is "eighteen million, four hundred ninety-five thousand, eight hundred fifty-three".