18368069 has 2 divisors, whose sum is σ = 18368070. Its totient is φ = 18368068.

The previous prime is 18368039. The next prime is 18368071. The reversal of 18368069 is 96086381.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15602500 + 2765569 = 3950^2 + 1663^2 .

It is a cyclic number.

It is not a de Polignac number, because 18368069 - 2¹⁶ = 18302533 is a prime.

It is a super-2 number, since 2×18368069² = 674771917577522, which contains 22 as substring.

Together with 18368071, 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 (18368029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9184034 + 9184035.

It is an arithmetic number, because the mean of its divisors is an integer number (9184035).

Almost surely, 2^18368069 is an apocalyptic number.

It is an amenable number.

18368069 is a deficient number, since it is larger than the sum of its proper divisors (1).

18368069 is an equidigital number, since it uses as much as digits as its factorization.

18368069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 18368069 is about 4285.7985253626. The cubic root of 18368069 is about 263.8484217483.

The spelling of 18368069 in words is "eighteen million, three hundred sixty-eight thousand, sixty-nine".