2685523189 has 2 divisors, whose sum is σ = 2685523190. Its totient is φ = 2685523188.

The previous prime is 2685523069. The next prime is 2685523199. The reversal of 2685523189 is 9813255862.

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., 2627382564 + 58140625 = 51258^2 + 7625^2 .

It is a cyclic number.

It is not a de Polignac number, because 2685523189 - 2¹⁵ = 2685490421 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2685523199) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1342761594 + 1342761595.

It is an arithmetic number, because the mean of its divisors is an integer number (1342761595).

Almost surely, 2^2685523189 is an apocalyptic number.

It is an amenable number.

2685523189 is a deficient number, since it is larger than the sum of its proper divisors (1).

2685523189 is an equidigital number, since it uses as much as digits as its factorization.

2685523189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1036800, while the sum is 49.

The square root of 2685523189 is about 51822.0338176726. The cubic root of 2685523189 is about 1389.9834701207.

The spelling of 2685523189 in words is "two billion, six hundred eighty-five million, five hundred twenty-three thousand, one hundred eighty-nine".