18339089 has 2 divisors, whose sum is σ = 18339090. Its totient is φ = 18339088.

The previous prime is 18339077. The next prime is 18339127. The reversal of 18339089 is 98093381.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11785489 + 6553600 = 3433^2 + 2560^2 .

It is an emirp because it is prime and its reverse (98093381) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18339089 - 2⁸ = 18338833 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (18339019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9169544 + 9169545.

It is an arithmetic number, because the mean of its divisors is an integer number (9169545).

Almost surely, 2^18339089 is an apocalyptic number.

It is an amenable number.

18339089 is a deficient number, since it is larger than the sum of its proper divisors (1).

18339089 is an equidigital number, since it uses as much as digits as its factorization.

18339089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 41.

The square root of 18339089 is about 4282.4162572081. The cubic root of 18339089 is about 263.7095874831.

The spelling of 18339089 in words is "eighteen million, three hundred thirty-nine thousand, eighty-nine".