18325669 has 2 divisors, whose sum is σ = 18325670. Its totient is φ = 18325668.

The previous prime is 18325667. The next prime is 18325679. The reversal of 18325669 is 96652381.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18062500 + 263169 = 4250^2 + 513^2 .

It is a cyclic number.

It is not a de Polignac number, because 18325669 - 2¹ = 18325667 is a prime.

It is a super-2 number, since 2×18325669² = 671660288595122, which contains 22 as substring.

Together with 18325667, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18325661) 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, 9162834 + 9162835.

It is an arithmetic number, because the mean of its divisors is an integer number (9162835).

Almost surely, 2^18325669 is an apocalyptic number.

It is an amenable number.

18325669 is a deficient number, since it is larger than the sum of its proper divisors (1).

18325669 is an equidigital number, since it uses as much as digits as its factorization.

18325669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 77760, while the sum is 40.

The square root of 18325669 is about 4280.8490980178. The cubic root of 18325669 is about 263.6452468415.

It can be divided in two parts, 183 and 25669, that added together give a palindrome (25852).

The spelling of 18325669 in words is "eighteen million, three hundred twenty-five thousand, six hundred sixty-nine".