18164093 has 2 divisors, whose sum is σ = 18164094. Its totient is φ = 18164092.

The previous prime is 18164053. The next prime is 18164101. The reversal of 18164093 is 39046181.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16949689 + 1214404 = 4117^2 + 1102^2 .

It is an emirp because it is prime and its reverse (39046181) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18164093 - 2¹⁴ = 18147709 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18164033) 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, 9082046 + 9082047.

It is an arithmetic number, because the mean of its divisors is an integer number (9082047).

Almost surely, 2^18164093 is an apocalyptic number.

It is an amenable number.

18164093 is a deficient number, since it is larger than the sum of its proper divisors (1).

18164093 is an equidigital number, since it uses as much as digits as its factorization.

18164093 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 32.

The square root of 18164093 is about 4261.9353584962. The cubic root of 18164093 is about 262.8681118133.

The spelling of 18164093 in words is "eighteen million, one hundred sixty-four thousand, ninety-three".