18825329 has 2 divisors, whose sum is σ = 18825330. Its totient is φ = 18825328.

The previous prime is 18825311. The next prime is 18825347. The reversal of 18825329 is 92352881.

It is a balanced prime because it is at equal distance from previous prime (18825311) and next prime (18825347).

It can be written as a sum of positive squares in only one way, i.e., 18722929 + 102400 = 4327^2 + 320^2 .

It is an emirp because it is prime and its reverse (92352881) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18825329 - 2⁸ = 18825073 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 18825292 and 18825301.

It is not a weakly prime, because it can be changed into another prime (18825349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9412664 + 9412665.

It is an arithmetic number, because the mean of its divisors is an integer number (9412665).

Almost surely, 2^18825329 is an apocalyptic number.

It is an amenable number.

18825329 is a deficient number, since it is larger than the sum of its proper divisors (1).

18825329 is an equidigital number, since it uses as much as digits as its factorization.

18825329 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34560, while the sum is 38.

The square root of 18825329 is about 4338.8165437133. The cubic root of 18825329 is about 266.0199402769.

The spelling of 18825329 in words is "eighteen million, eight hundred twenty-five thousand, three hundred twenty-nine".