2101889193 has 16 divisors (see below), whose sum is σ = 2951330880. Its totient is φ = 1326919104.

The previous prime is 2101889191. The next prime is 2101889239. The reversal of 2101889193 is 3919881012.

It is not a de Polignac number, because 2101889193 - 2¹ = 2101889191 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2101889191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 146655 + ... + 160347.

It is an arithmetic number, because the mean of its divisors is an integer number (184458180).

Almost surely, 2^2101889193 is an apocalyptic number.

It is an amenable number.

2101889193 is a deficient number, since it is larger than the sum of its proper divisors (849441687).

2101889193 is a wasteful number, since it uses less digits than its factorization.

2101889193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16408.

The product of its (nonzero) digits is 31104, while the sum is 42.

The square root of 2101889193 is about 45846.3651012815. The cubic root of 2101889193 is about 1280.9630596047.

The spelling of 2101889193 in words is "two billion, one hundred one million, eight hundred eighty-nine thousand, one hundred ninety-three".