18138740083663 has 2 divisors, whose sum is σ = 18138740083664. Its totient is φ = 18138740083662.

The previous prime is 18138740083657. The next prime is 18138740083727. The reversal of 18138740083663 is 36638004783181.

It is a weak prime.

It is an emirp because it is prime and its reverse (36638004783181) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18138740083663 - 2¹⁷ = 18138739952591 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18138740083598 and 18138740083607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18138740083063) 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, 9069370041831 + 9069370041832.

It is an arithmetic number, because the mean of its divisors is an integer number (9069370041832).

Almost surely, 2^{18138740083663} is an apocalyptic number.

18138740083663 is a deficient number, since it is larger than the sum of its proper divisors (1).

18138740083663 is an equidigital number, since it uses as much as digits as its factorization.

18138740083663 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13934592, while the sum is 58.

The spelling of 18138740083663 in words is "eighteen trillion, one hundred thirty-eight billion, seven hundred forty million, eighty-three thousand, six hundred sixty-three".