2109143892 has 48 divisors (see below), whose sum is σ = 5002905600. Its totient is φ = 691444320.

The previous prime is 2109143891. The next prime is 2109143909. The reversal of 2109143892 is 2983419012.

It is a self number, because there is not a number n which added to its sum of digits gives 2109143892.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2109143891) 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, 371209 + ... + 376847.

It is an arithmetic number, because the mean of its divisors is an integer number (104227200).

Almost surely, 2^2109143892 is an apocalyptic number.

It is an amenable number.

2109143892 is an abundant number, since it is smaller than the sum of its proper divisors (2893761708).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2109143892 is a wasteful number, since it uses less digits than its factorization.

2109143892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6156 (or 6154 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 39.

The square root of 2109143892 is about 45925.4166230422. The cubic root of 2109143892 is about 1282.4351210677.

The spelling of 2109143892 in words is "two billion, one hundred nine million, one hundred forty-three thousand, eight hundred ninety-two".