18027853 has 2 divisors, whose sum is σ = 18027854. Its totient is φ = 18027852.

The previous prime is 18027851. The next prime is 18027859. The reversal of 18027853 is 35872081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12659364 + 5368489 = 3558^2 + 2317^2 .

It is a cyclic number.

It is not a de Polignac number, because 18027853 - 2¹ = 18027851 is a prime.

Together with 18027851, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18027851) 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, 9013926 + 9013927.

It is an arithmetic number, because the mean of its divisors is an integer number (9013927).

Almost surely, 2^18027853 is an apocalyptic number.

It is an amenable number.

18027853 is a deficient number, since it is larger than the sum of its proper divisors (1).

18027853 is an equidigital number, since it uses as much as digits as its factorization.

18027853 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 18027853 is about 4245.9219258013. The cubic root of 18027853 is about 262.2092466275.

The spelling of 18027853 in words is "eighteen million, twenty-seven thousand, eight hundred fifty-three".