2172043886 has 8 divisors (see below), whose sum is σ = 3270454704. Its totient is φ = 1081892320.

The previous prime is 2172043873. The next prime is 2172043889. The reversal of 2172043886 is 6883402712.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2172043889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2064155 + ... + 2065206.

It is an arithmetic number, because the mean of its divisors is an integer number (408806838).

Almost surely, 2^2172043886 is an apocalyptic number.

2172043886 is a deficient number, since it is larger than the sum of its proper divisors (1098410818).

2172043886 is a wasteful number, since it uses less digits than its factorization.

2172043886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4129626.

The product of its (nonzero) digits is 129024, while the sum is 41.

The square root of 2172043886 is about 46605.1916206768. The cubic root of 2172043886 is about 1295.0589332313.

The spelling of 2172043886 in words is "two billion, one hundred seventy-two million, forty-three thousand, eight hundred eighty-six".