18365069 has 2 divisors, whose sum is σ = 18365070. Its totient is φ = 18365068.

The previous prime is 18365057. The next prime is 18365093. The reversal of 18365069 is 96056381.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18361225 + 3844 = 4285^2 + 62^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18365069 is a prime.

It is a super-2 number, since 2×18365069² = 674551518749522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18365029) 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, 9182534 + 9182535.

It is an arithmetic number, because the mean of its divisors is an integer number (9182535).

Almost surely, 2^18365069 is an apocalyptic number.

It is an amenable number.

18365069 is a deficient number, since it is larger than the sum of its proper divisors (1).

18365069 is an equidigital number, since it uses as much as digits as its factorization.

18365069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 18365069 is about 4285.4485179500. The cubic root of 18365069 is about 263.8340564502.

The spelling of 18365069 in words is "eighteen million, three hundred sixty-five thousand, sixty-nine".