2189608389 has 16 divisors (see below), whose sum is σ = 3256496640. Its totient is φ = 1454054400.

The previous prime is 2189608367. The next prime is 2189608427. The reversal of 2189608389 is 9838069812.

It is a happy number.

2189608389 is a `hidden beast` number, since 21 + 8 + 9 + 608 + 3 + 8 + 9 = 666.

It is not a de Polignac number, because 2189608389 - 2¹² = 2189604293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2189608339) 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, 150837 + ... + 164714.

It is an arithmetic number, because the mean of its divisors is an integer number (203531040).

Almost surely, 2^2189608389 is an apocalyptic number.

It is an amenable number.

2189608389 is a deficient number, since it is larger than the sum of its proper divisors (1066888251).

2189608389 is a wasteful number, since it uses less digits than its factorization.

2189608389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 315817 (or 315811 counting only the distinct ones).

The product of its (nonzero) digits is 1492992, while the sum is 54.

The square root of 2189608389 is about 46793.2515326730. The cubic root of 2189608389 is about 1298.5404504928.

The spelling of 2189608389 in words is "two billion, one hundred eighty-nine million, six hundred eight thousand, three hundred eighty-nine".