18012853 has 2 divisors, whose sum is σ = 18012854. Its totient is φ = 18012852.

The previous prime is 18012847. The next prime is 18012881. The reversal of 18012853 is 35821081.

It is an a-pointer prime, because the next prime (18012881) can be obtained adding 18012853 to its sum of digits (28).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15816529 + 2196324 = 3977^2 + 1482^2 .

It is a cyclic number.

It is not a de Polignac number, because 18012853 - 2⁹ = 18012341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18016853) 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, 9006426 + 9006427.

It is an arithmetic number, because the mean of its divisors is an integer number (9006427).

Almost surely, 2^18012853 is an apocalyptic number.

It is an amenable number.

18012853 is a deficient number, since it is larger than the sum of its proper divisors (1).

18012853 is an equidigital number, since it uses as much as digits as its factorization.

18012853 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 18012853 is about 4244.1551573900. The cubic root of 18012853 is about 262.1365030779.

The spelling of 18012853 in words is "eighteen million, twelve thousand, eight hundred fifty-three".