18055535903 has 2 divisors, whose sum is σ = 18055535904. Its totient is φ = 18055535902.

The previous prime is 18055535893. The next prime is 18055535951. The reversal of 18055535903 is 30953555081.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18055535903 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18055535963) 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, 9027767951 + 9027767952.

It is an arithmetic number, because the mean of its divisors is an integer number (9027767952).

Almost surely, 2^18055535903 is an apocalyptic number.

18055535903 is a deficient number, since it is larger than the sum of its proper divisors (1).

18055535903 is an equidigital number, since it uses as much as digits as its factorization.

18055535903 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 405000, while the sum is 44.

The spelling of 18055535903 in words is "eighteen billion, fifty-five million, five hundred thirty-five thousand, nine hundred three".