18365093 has 2 divisors, whose sum is σ = 18365094. Its totient is φ = 18365092.

The previous prime is 18365069. The next prime is 18365101. The reversal of 18365093 is 39056381.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17447329 + 917764 = 4177^2 + 958^2 .

It is a cyclic number.

It is not a de Polignac number, because 18365093 - 2⁶ = 18365029 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18365023) 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, 9182546 + 9182547.

It is an arithmetic number, because the mean of its divisors is an integer number (9182547).

Almost surely, 2^18365093 is an apocalyptic number.

It is an amenable number.

18365093 is a deficient number, since it is larger than the sum of its proper divisors (1).

18365093 is an equidigital number, since it uses as much as digits as its factorization.

18365093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 35.

The square root of 18365093 is about 4285.4513181227. The cubic root of 18365093 is about 263.8341713788.

The spelling of 18365093 in words is "eighteen million, three hundred sixty-five thousand, ninety-three".