18226093 has 2 divisors, whose sum is σ = 18226094. Its totient is φ = 18226092.

The previous prime is 18226079. The next prime is 18226121. The reversal of 18226093 is 39062281.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15342889 + 2883204 = 3917^2 + 1698^2 .

It is an emirp because it is prime and its reverse (39062281) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18226093 - 2²¹ = 16128941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18226393) 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, 9113046 + 9113047.

It is an arithmetic number, because the mean of its divisors is an integer number (9113047).

Almost surely, 2^18226093 is an apocalyptic number.

It is an amenable number.

18226093 is a deficient number, since it is larger than the sum of its proper divisors (1).

18226093 is an equidigital number, since it uses as much as digits as its factorization.

18226093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 18226093 is about 4269.2028529926. The cubic root of 18226093 is about 263.1668571593.

The spelling of 18226093 in words is "eighteen million, two hundred twenty-six thousand, ninety-three".