18192910091959 has 2 divisors, whose sum is σ = 18192910091960. Its totient is φ = 18192910091958.

The previous prime is 18192910091929. The next prime is 18192910092013. The reversal of 18192910091959 is 95919001929181.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18192910091959 - 2⁵ = 18192910091927 is a prime.

It is a super-2 number, since 2×18192910091959² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18192910091959.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18192910091929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9096455045979 + 9096455045980.

It is an arithmetic number, because the mean of its divisors is an integer number (9096455045980).

Almost surely, 2^{18192910091959} is an apocalyptic number.

18192910091959 is a deficient number, since it is larger than the sum of its proper divisors (1).

18192910091959 is an equidigital number, since it uses as much as digits as its factorization.

18192910091959 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4723920, while the sum is 64.

The spelling of 18192910091959 in words is "eighteen trillion, one hundred ninety-two billion, nine hundred ten million, ninety-one thousand, nine hundred fifty-nine".