18485826344737 has 2 divisors, whose sum is σ = 18485826344738. Its totient is φ = 18485826344736.

The previous prime is 18485826344717. The next prime is 18485826344803. The reversal of 18485826344737 is 73744362858481.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10934767514176 + 7551058830561 = 3306776^2 + 2747919^2 .

It is a cyclic number.

It is not a de Polignac number, because 18485826344737 - 2¹⁵ = 18485826311969 is a prime.

It is not a weakly prime, because it can be changed into another prime (18485826344717) 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, 9242913172368 + 9242913172369.

It is an arithmetic number, because the mean of its divisors is an integer number (9242913172369).

Almost surely, 2^{18485826344737} is an apocalyptic number.

It is an amenable number.

18485826344737 is a deficient number, since it is larger than the sum of its proper divisors (1).

18485826344737 is an equidigital number, since it uses as much as digits as its factorization.

18485826344737 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 867041280, while the sum is 70.

The spelling of 18485826344737 in words is "eighteen trillion, four hundred eighty-five billion, eight hundred twenty-six million, three hundred forty-four thousand, seven hundred thirty-seven".