18205063 has 2 divisors, whose sum is σ = 18205064. Its totient is φ = 18205062.

The previous prime is 18205049. The next prime is 18205067. The reversal of 18205063 is 36050281.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18205063 - 2⁹ = 18204551 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18205067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9102531 + 9102532.

It is an arithmetic number, because the mean of its divisors is an integer number (9102532).

Almost surely, 2^18205063 is an apocalyptic number.

18205063 is a deficient number, since it is larger than the sum of its proper divisors (1).

18205063 is an equidigital number, since it uses as much as digits as its factorization.

18205063 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 18205063 is about 4266.7391530301. The cubic root of 18205063 is about 263.0656006992.

The spelling of 18205063 in words is "eighteen million, two hundred five thousand, sixty-three".