18485826344803 has 2 divisors, whose sum is σ = 18485826344804. Its totient is φ = 18485826344802.

The previous prime is 18485826344737. The next prime is 18485826344813. The reversal of 18485826344803 is 30844362858481.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 18485826344803 - 2²¹ = 18485824247651 is a prime.

It is not a weakly prime, because it can be changed into another prime (18485826344813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9242913172401 + 9242913172402.

It is an arithmetic number, because the mean of its divisors is an integer number (9242913172402).

Almost surely, 2^{18485826344803} is an apocalyptic number.

18485826344803 is a deficient number, since it is larger than the sum of its proper divisors (1).

18485826344803 is an equidigital number, since it uses as much as digits as its factorization.

18485826344803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 141557760, while the sum is 64.

The spelling of 18485826344803 in words is "eighteen trillion, four hundred eighty-five billion, eight hundred twenty-six million, three hundred forty-four thousand, eight hundred three".