18245593 has 2 divisors, whose sum is σ = 18245594. Its totient is φ = 18245592.

The previous prime is 18245581. The next prime is 18245597. The reversal of 18245593 is 39554281.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16064064 + 2181529 = 4008^2 + 1477^2 .

It is a cyclic number.

It is not a de Polignac number, because 18245593 - 2¹⁷ = 18114521 is a prime.

It is not a weakly prime, because it can be changed into another prime (18245597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9122796 + 9122797.

It is an arithmetic number, because the mean of its divisors is an integer number (9122797).

Almost surely, 2^18245593 is an apocalyptic number.

It is an amenable number.

18245593 is a deficient number, since it is larger than the sum of its proper divisors (1).

18245593 is an equidigital number, since it uses as much as digits as its factorization.

18245593 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43200, while the sum is 37.

The square root of 18245593 is about 4271.4860411805. The cubic root of 18245593 is about 263.2606773152.

The spelling of 18245593 in words is "eighteen million, two hundred forty-five thousand, five hundred ninety-three".