18493008103 has 2 divisors, whose sum is σ = 18493008104. Its totient is φ = 18493008102.

The previous prime is 18493008097. The next prime is 18493008133. The reversal of 18493008103 is 30180039481.

It is a weak prime.

It is an emirp because it is prime and its reverse (30180039481) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 18493008103 - 2⁵ = 18493008071 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18493008133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9246504051 + 9246504052.

It is an arithmetic number, because the mean of its divisors is an integer number (9246504052).

Almost surely, 2^18493008103 is an apocalyptic number.

18493008103 is a deficient number, since it is larger than the sum of its proper divisors (1).

18493008103 is an equidigital number, since it uses as much as digits as its factorization.

18493008103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 37.

The spelling of 18493008103 in words is "eighteen billion, four hundred ninety-three million, eight thousand, one hundred three".