389785683349 has 2 divisors, whose sum is σ = 389785683350. Its totient is φ = 389785683348.

The previous prime is 389785683277. The next prime is 389785683377. The reversal of 389785683349 is 943386587983.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 267488599249 + 122297084100 = 517193^2 + 349710^2 .

It is a cyclic number.

It is not a de Polignac number, because 389785683349 - 2⁹ = 389785682837 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (389785686349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194892841674 + 194892841675.

It is an arithmetic number, because the mean of its divisors is an integer number (194892841675).

Almost surely, 2^389785683349 is an apocalyptic number.

It is an amenable number.

389785683349 is a deficient number, since it is larger than the sum of its proper divisors (1).

389785683349 is an equidigital number, since it uses as much as digits as its factorization.

389785683349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 940584960, while the sum is 73.

The spelling of 389785683349 in words is "three hundred eighty-nine billion, seven hundred eighty-five million, six hundred eighty-three thousand, three hundred forty-nine".