2189741772 has 48 divisors (see below), whose sum is σ = 5352463872. Its totient is φ = 695439360.

The previous prime is 2189741759. The next prime is 2189741777. The reversal of 2189741772 is 2771479812.

It is not an unprimeable number, because it can be changed into a prime (2189741777) 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, 55497 + ... + 86367.

It is an arithmetic number, because the mean of its divisors is an integer number (111509664).

Almost surely, 2^2189741772 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2189741772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2676231936).

2189741772 is an abundant number, since it is smaller than the sum of its proper divisors (3162722100).

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

2189741772 is a wasteful number, since it uses less digits than its factorization.

2189741772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31158 (or 31156 counting only the distinct ones).

The product of its digits is 395136, while the sum is 48.

The square root of 2189741772 is about 46794.6767485363. The cubic root of 2189741772 is about 1298.5668174153.

The spelling of 2189741772 in words is "two billion, one hundred eighty-nine million, seven hundred forty-one thousand, seven hundred seventy-two".