18680323 has 2 divisors, whose sum is σ = 18680324. Its totient is φ = 18680322.

The previous prime is 18680317. The next prime is 18680351. The reversal of 18680323 is 32308681.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18680323 - 2⁹ = 18679811 is a prime.

It is not a weakly prime, because it can be changed into another prime (18680353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9340161 + 9340162.

It is an arithmetic number, because the mean of its divisors is an integer number (9340162).

Almost surely, 2^18680323 is an apocalyptic number.

18680323 is a deficient number, since it is larger than the sum of its proper divisors (1).

18680323 is an equidigital number, since it uses as much as digits as its factorization.

18680323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 18680323 is about 4322.0739234770. The cubic root of 18680323 is about 265.3351544379.

The spelling of 18680323 in words is "eighteen million, six hundred eighty thousand, three hundred twenty-three".