18580201187489 has 2 divisors, whose sum is σ = 18580201187490. Its totient is φ = 18580201187488.

The previous prime is 18580201187399. The next prime is 18580201187507. The reversal of 18580201187489 is 98478110208581.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17105999683600 + 1474201503889 = 4135940^2 + 1214167^2 .

It is a cyclic number.

It is not a de Polignac number, because 18580201187489 - 2¹⁶ = 18580201121953 is a prime.

It is not a weakly prime, because it can be changed into another prime (18580201187089) 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, 9290100593744 + 9290100593745.

It is an arithmetic number, because the mean of its divisors is an integer number (9290100593745).

Almost surely, 2^{18580201187489} is an apocalyptic number.

It is an amenable number.

18580201187489 is a deficient number, since it is larger than the sum of its proper divisors (1).

18580201187489 is an equidigital number, since it uses as much as digits as its factorization.

18580201187489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10321920, while the sum is 62.

The spelling of 18580201187489 in words is "eighteen trillion, five hundred eighty billion, two hundred one million, one hundred eighty-seven thousand, four hundred eighty-nine".