3988786522849 has 2 divisors, whose sum is σ = 3988786522850. Its totient is φ = 3988786522848.

The previous prime is 3988786522771. The next prime is 3988786522859. The reversal of 3988786522849 is 9482256878893.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2265723373824 + 1723063149025 = 1505232^2 + 1312655^2 .

It is a cyclic number.

It is not a de Polignac number, because 3988786522849 - 2²⁹ = 3988249651937 is a prime.

It is not a weakly prime, because it can be changed into another prime (3988786522859) 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, 1994393261424 + 1994393261425.

It is an arithmetic number, because the mean of its divisors is an integer number (1994393261425).

Almost surely, 2^{3988786522849} is an apocalyptic number.

It is an amenable number.

3988786522849 is a deficient number, since it is larger than the sum of its proper divisors (1).

3988786522849 is an equidigital number, since it uses as much as digits as its factorization.

3988786522849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3344302080, while the sum is 79.

The spelling of 3988786522849 in words is "three trillion, nine hundred eighty-eight billion, seven hundred eighty-six million, five hundred twenty-two thousand, eight hundred forty-nine".