208488820829 has 2 divisors, whose sum is σ = 208488820830. Its totient is φ = 208488820828.

The previous prime is 208488820801. The next prime is 208488820849. The reversal of 208488820829 is 928028884802.

208488820829 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 203504743225 + 4984077604 = 451115^2 + 70598^2 .

It is a cyclic number.

It is not a de Polignac number, because 208488820829 - 2¹² = 208488816733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (208488820849) 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, 104244410414 + 104244410415.

It is an arithmetic number, because the mean of its divisors is an integer number (104244410415).

Almost surely, 2^208488820829 is an apocalyptic number.

It is an amenable number.

208488820829 is a deficient number, since it is larger than the sum of its proper divisors (1).

208488820829 is an equidigital number, since it uses as much as digits as its factorization.

208488820829 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9437184, while the sum is 59.

The spelling of 208488820829 in words is "two hundred eight billion, four hundred eighty-eight million, eight hundred twenty thousand, eight hundred twenty-nine".