13857843589 has 2 divisors, whose sum is σ = 13857843590. Its totient is φ = 13857843588.

The previous prime is 13857843569. The next prime is 13857843617. The reversal of 13857843589 is 98534875831.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12897463489 + 960380100 = 113567^2 + 30990^2 .

It is a cyclic number.

It is not a de Polignac number, because 13857843589 - 2¹¹ = 13857841541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13857843569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6928921794 + 6928921795.

It is an arithmetic number, because the mean of its divisors is an integer number (6928921795).

Almost surely, 2^13857843589 is an apocalyptic number.

It is an amenable number.

13857843589 is a deficient number, since it is larger than the sum of its proper divisors (1).

13857843589 is an equidigital number, since it uses as much as digits as its factorization.

13857843589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 29030400, while the sum is 61.

The spelling of 13857843589 in words is "thirteen billion, eight hundred fifty-seven million, eight hundred forty-three thousand, five hundred eighty-nine".