2189539212 has 48 divisors (see below), whose sum is σ = 5863882752. Its totient is φ = 622892160.

The previous prime is 2189539159. The next prime is 2189539217. The reversal of 2189539212 is 2129359812.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (2189539217) 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 15 ways as a sum of consecutive naturals, for example, 36364 + ... + 75507.

It is an arithmetic number, because the mean of its divisors is an integer number (122164224).

Almost surely, 2^2189539212 is an apocalyptic number.

It is an amenable number.

2189539212 is an abundant number, since it is smaller than the sum of its proper divisors (3674343540).

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

2189539212 is a wasteful number, since it uses less digits than its factorization.

2189539212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112118 (or 112116 counting only the distinct ones).

The product of its digits is 77760, while the sum is 42.

The square root of 2189539212 is about 46792.5123497339. The cubic root of 2189539212 is about 1298.5267752805.

The spelling of 2189539212 in words is "two billion, one hundred eighty-nine million, five hundred thirty-nine thousand, two hundred twelve".