18358082069 has 2 divisors, whose sum is σ = 18358082070. Its totient is φ = 18358082068.

The previous prime is 18358082051. The next prime is 18358082117. The reversal of 18358082069 is 96028085381.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9542749969 + 8815332100 = 97687^2 + 93890^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18358082069 is a prime.

It is a super-2 number, since 2×18358082069² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18358082969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9179041034 + 9179041035.

It is an arithmetic number, because the mean of its divisors is an integer number (9179041035).

Almost surely, 2^18358082069 is an apocalyptic number.

It is an amenable number.

18358082069 is a deficient number, since it is larger than the sum of its proper divisors (1).

18358082069 is an equidigital number, since it uses as much as digits as its factorization.

18358082069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 829440, while the sum is 50.

The spelling of 18358082069 in words is "eighteen billion, three hundred fifty-eight million, eighty-two thousand, sixty-nine".