2108889171 has 6 divisors (see below), whose sum is σ = 3046173260. Its totient is φ = 1405926108.

The previous prime is 2108889169. The next prime is 2108889179. The reversal of 2108889171 is 1719888012.

It is a happy number.

It is not a de Polignac number, because 2108889171 - 2¹ = 2108889169 is a prime.

It is a super-2 number, since 2×2108889171² = 8894827071122134482, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2108889179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 117160501 + ... + 117160518.

Almost surely, 2^2108889171 is an apocalyptic number.

2108889171 is a deficient number, since it is larger than the sum of its proper divisors (937284089).

2108889171 is a wasteful number, since it uses less digits than its factorization.

2108889171 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234321025 (or 234321022 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 45.

The square root of 2108889171 is about 45922.6433363760. The cubic root of 2108889171 is about 1282.3834924885.

The spelling of 2108889171 in words is "two billion, one hundred eight million, eight hundred eighty-nine thousand, one hundred seventy-one".