5645188089 has 12 divisors (see below), whose sum is σ = 8159966100. Its totient is φ = 3760779264.

The previous prime is 5645188037. The next prime is 5645188091. The reversal of 5645188089 is 9808815465.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 47155689 + 5598032400 = 6867^2 + 74820^2 .

It is not a de Polignac number, because 5645188089 - 2⁸ = 5645187833 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5645188019) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 209904 + ... + 235265.

It is an arithmetic number, because the mean of its divisors is an integer number (679997175).

Almost surely, 2^5645188089 is an apocalyptic number.

It is an amenable number.

5645188089 is a deficient number, since it is larger than the sum of its proper divisors (2514778011).

5645188089 is a wasteful number, since it uses less digits than its factorization.

5645188089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 446584 (or 446581 counting only the distinct ones).

The product of its (nonzero) digits is 2764800, while the sum is 54.

The square root of 5645188089 is about 75134.4667180116. The cubic root of 5645188089 is about 1780.5717231979.

The spelling of 5645188089 in words is "five billion, six hundred forty-five million, one hundred eighty-eight thousand, eighty-nine".