18388573045019 has 2 divisors, whose sum is σ = 18388573045020. Its totient is φ = 18388573045018.

The previous prime is 18388573045013. The next prime is 18388573045091. The reversal of 18388573045019 is 91054037588381.

Together with next prime (18388573045091) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18388573045019 - 2¹² = 18388573040923 is a prime.

It is a super-2 number, since 2×18388573045019² (a number of 27 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (18388573045013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9194286522509 + 9194286522510.

It is an arithmetic number, because the mean of its divisors is an integer number (9194286522510).

Almost surely, 2^{18388573045019} is an apocalyptic number.

18388573045019 is a deficient number, since it is larger than the sum of its proper divisors (1).

18388573045019 is an equidigital number, since it uses as much as digits as its factorization.

18388573045019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 29030400, while the sum is 62.

The spelling of 18388573045019 in words is "eighteen trillion, three hundred eighty-eight billion, five hundred seventy-three million, forty-five thousand, nineteen".