1689813171 has 10 divisors (see below), whose sum is σ = 2524288932. Its totient is φ = 1126542060.

The previous prime is 1689813119. The next prime is 1689813221. The reversal of 1689813171 is 1713189861.

It is not a de Polignac number, because 1689813171 - 2⁹ = 1689812659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1689811171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 10430865 + ... + 10431026.

Almost surely, 2^1689813171 is an apocalyptic number.

1689813171 is a deficient number, since it is larger than the sum of its proper divisors (834475761).

1689813171 is an equidigital number, since it uses as much as digits as its factorization.

1689813171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20861903 (or 20861894 counting only the distinct ones).

The product of its digits is 72576, while the sum is 45.

The square root of 1689813171 is about 41107.3371917958. The cubic root of 1689813171 is about 1191.0945302454.

The spelling of 1689813171 in words is "one billion, six hundred eighty-nine million, eight hundred thirteen thousand, one hundred seventy-one".