18244665189 has 6 divisors (see below), whose sum is σ = 26353405286. Its totient is φ = 12163110120.

The previous prime is 18244665139. The next prime is 18244665209. The reversal of 18244665189 is 98156644281.

18244665189 is a `hidden beast` number, since 1 + 82 + 4 + 46 + 6 + 518 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 13278644289 + 4966020900 = 115233^2 + 70470^2 .

It is not a de Polignac number, because 18244665189 - 2⁹ = 18244664677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18244665139) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1013592502 + ... + 1013592519.

Almost surely, 2^18244665189 is an apocalyptic number.

It is an amenable number.

18244665189 is a deficient number, since it is larger than the sum of its proper divisors (8108740097).

18244665189 is a wasteful number, since it uses less digits than its factorization.

18244665189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2027185027 (or 2027185024 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 54.

The spelling of 18244665189 in words is "eighteen billion, two hundred forty-four million, six hundred sixty-five thousand, one hundred eighty-nine".