18882524449 has 2 divisors, whose sum is σ = 18882524450. Its totient is φ = 18882524448.

The previous prime is 18882524447. The next prime is 18882524467. The reversal of 18882524449 is 94442528881.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17140046400 + 1742478049 = 130920^2 + 41743^2 .

It is a cyclic number.

It is not a de Polignac number, because 18882524449 - 2¹ = 18882524447 is a prime.

Together with 18882524447, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 18882524449.

It is not a weakly prime, because it can be changed into another prime (18882524447) 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, 9441262224 + 9441262225.

It is an arithmetic number, because the mean of its divisors is an integer number (9441262225).

Almost surely, 2^18882524449 is an apocalyptic number.

It is an amenable number.

18882524449 is a deficient number, since it is larger than the sum of its proper divisors (1).

18882524449 is an equidigital number, since it uses as much as digits as its factorization.

18882524449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5898240, while the sum is 55.

The spelling of 18882524449 in words is "eighteen billion, eight hundred eighty-two million, five hundred twenty-four thousand, four hundred forty-nine".