2189645330 has 16 divisors (see below), whose sum is σ = 3958576920. Its totient is φ = 872032512.

The previous prime is 2189645321. The next prime is 2189645363. The reversal of 2189645330 is 335469812.

It can be written as a sum of positive squares in 4 ways, for example, as 1728813241 + 460832089 = 41579^2 + 21467^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 475799 + ... + 480378.

Almost surely, 2^2189645330 is an apocalyptic number.

2189645330 is a deficient number, since it is larger than the sum of its proper divisors (1768931590).

2189645330 is a wasteful number, since it uses less digits than its factorization.

2189645330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 956413.

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 2189645330 is about 46793.6462567302. The cubic root of 2189645330 is about 1298.5477530335.

The spelling of 2189645330 in words is "two billion, one hundred eighty-nine million, six hundred forty-five thousand, three hundred thirty".