18328069 has 2 divisors, whose sum is σ = 18328070. Its totient is φ = 18328068.

The previous prime is 18328067. The next prime is 18328097. The reversal of 18328069 is 96082381.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14861025 + 3467044 = 3855^2 + 1862^2 .

It is a cyclic number.

It is not a de Polignac number, because 18328069 - 2¹ = 18328067 is a prime.

It is a super-2 number, since 2×18328069² = 671836226537522, which contains 22 as substring.

Together with 18328067, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18328067) 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, 9164034 + 9164035.

It is an arithmetic number, because the mean of its divisors is an integer number (9164035).

Almost surely, 2^18328069 is an apocalyptic number.

It is an amenable number.

18328069 is a deficient number, since it is larger than the sum of its proper divisors (1).

18328069 is an equidigital number, since it uses as much as digits as its factorization.

18328069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 18328069 is about 4281.1294070607. The cubic root of 18328069 is about 263.6567556705.

The spelling of 18328069 in words is "eighteen million, three hundred twenty-eight thousand, sixty-nine".