18300223 has 2 divisors, whose sum is σ = 18300224. Its totient is φ = 18300222.

The previous prime is 18300197. The next prime is 18300229. The reversal of 18300223 is 32200381.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18300223 - 2¹³ = 18292031 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 18300223.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18300229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9150111 + 9150112.

It is an arithmetic number, because the mean of its divisors is an integer number (9150112).

Almost surely, 2^18300223 is an apocalyptic number.

18300223 is a deficient number, since it is larger than the sum of its proper divisors (1).

18300223 is an equidigital number, since it uses as much as digits as its factorization.

18300223 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 18300223 is about 4277.8759916575. The cubic root of 18300223 is about 263.5231626316.

The spelling of 18300223 in words is "eighteen million, three hundred thousand, two hundred twenty-three".