203835385489 has 2 divisors, whose sum is σ = 203835385490. Its totient is φ = 203835385488.

The previous prime is 203835385471. The next prime is 203835385493. The reversal of 203835385489 is 984583538302.

203835385489 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., 190746195025 + 13089190464 = 436745^2 + 114408^2 .

It is a cyclic number.

It is not a de Polignac number, because 203835385489 - 2²³ = 203826996881 is a prime.

It is not a weakly prime, because it can be changed into another prime (203835355489) 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, 101917692744 + 101917692745.

It is an arithmetic number, because the mean of its divisors is an integer number (101917692745).

Almost surely, 2^203835385489 is an apocalyptic number.

It is an amenable number.

203835385489 is a deficient number, since it is larger than the sum of its proper divisors (1).

203835385489 is an equidigital number, since it uses as much as digits as its factorization.

203835385489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24883200, while the sum is 58.

The spelling of 203835385489 in words is "two hundred three billion, eight hundred thirty-five million, three hundred eighty-five thousand, four hundred eighty-nine".