1885685211493 has 2 divisors, whose sum is σ = 1885685211494. Its totient is φ = 1885685211492.

The previous prime is 1885685211451. The next prime is 1885685211533. The reversal of 1885685211493 is 3941125865881.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1349133356484 + 536551855009 = 1161522^2 + 732497^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1885685211493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1885685211433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 942842605746 + 942842605747.

It is an arithmetic number, because the mean of its divisors is an integer number (942842605747).

Almost surely, 2^{1885685211493} is an apocalyptic number.

It is an amenable number.

1885685211493 is a deficient number, since it is larger than the sum of its proper divisors (1).

1885685211493 is an equidigital number, since it uses as much as digits as its factorization.

1885685211493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 16588800, while the sum is 61.

The spelling of 1885685211493 in words is "one trillion, eight hundred eighty-five billion, six hundred eighty-five million, two hundred eleven thousand, four hundred ninety-three".