18358086269 has 2 divisors, whose sum is σ = 18358086270. Its totient is φ = 18358086268.

The previous prime is 18358086233. The next prime is 18358086283. The reversal of 18358086269 is 96268085381.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15621750169 + 2736336100 = 124987^2 + 52310^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18358086269 is a prime.

It is a super-2 number, since 2×18358086269² (a number of 21 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18358086869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9179043134 + 9179043135.

It is an arithmetic number, because the mean of its divisors is an integer number (9179043135).

Almost surely, 2^18358086269 is an apocalyptic number.

It is an amenable number.

18358086269 is a deficient number, since it is larger than the sum of its proper divisors (1).

18358086269 is an equidigital number, since it uses as much as digits as its factorization.

18358086269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4976640, while the sum is 56.

The spelling of 18358086269 in words is "eighteen billion, three hundred fifty-eight million, eighty-six thousand, two hundred sixty-nine".