18648081795019 has 2 divisors, whose sum is σ = 18648081795020. Its totient is φ = 18648081795018.

The previous prime is 18648081794869. The next prime is 18648081795097. The reversal of 18648081795019 is 91059718084681.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18648081795019 - 2¹³ = 18648081786827 is a prime.

It is a super-2 number, since 2×18648081795019² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (18648081795619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9324040897509 + 9324040897510.

It is an arithmetic number, because the mean of its divisors is an integer number (9324040897510).

Almost surely, 2^{18648081795019} is an apocalyptic number.

18648081795019 is a deficient number, since it is larger than the sum of its proper divisors (1).

18648081795019 is an equidigital number, since it uses as much as digits as its factorization.

18648081795019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34836480, while the sum is 67.

The spelling of 18648081795019 in words is "eighteen trillion, six hundred forty-eight billion, eighty-one million, seven hundred ninety-five thousand, nineteen".