18325427 has 2 divisors, whose sum is σ = 18325428. Its totient is φ = 18325426.

The previous prime is 18325403. The next prime is 18325429. The reversal of 18325427 is 72452381.

It is a strong prime.

It is an emirp because it is prime and its reverse (72452381) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18325427 - 2¹⁰ = 18324403 is a prime.

Together with 18325429, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 18325393 and 18325402.

It is not a weakly prime, because it can be changed into another prime (18325429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9162713 + 9162714.

It is an arithmetic number, because the mean of its divisors is an integer number (9162714).

Almost surely, 2^18325427 is an apocalyptic number.

18325427 is a deficient number, since it is larger than the sum of its proper divisors (1).

18325427 is an equidigital number, since it uses as much as digits as its factorization.

18325427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13440, while the sum is 32.

The square root of 18325427 is about 4280.8208325040. The cubic root of 18325427 is about 263.6440863122.

The spelling of 18325427 in words is "eighteen million, three hundred twenty-five thousand, four hundred twenty-seven".