18224448403869 has 6 divisors (see below), whose sum is σ = 26324203250046. Its totient is φ = 12149632269240.

The previous prime is 18224448403751. The next prime is 18224448403871. The reversal of 18224448403869 is 96830484442281.

It is a happy number.

18224448403869 is a `hidden beast` number, since 1 + 8 + 2 + 244 + 4 + 8 + 4 + 0 + 386 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 15930395864100 + 2294052539769 = 3991290^2 + 1514613^2 .

It is not a de Polignac number, because 18224448403869 - 2¹¹ = 18224448401821 is a prime.

It is a super-2 number, since 2×18224448403869² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18224448403669) 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, 1012469355762 + ... + 1012469355779.

It is an arithmetic number, because the mean of its divisors is an integer number (4387367208341).

Almost surely, 2^{18224448403869} is an apocalyptic number.

It is an amenable number.

18224448403869 is a deficient number, since it is larger than the sum of its proper divisors (8099754846177).

18224448403869 is a wasteful number, since it uses less digits than its factorization.

18224448403869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2024938711547 (or 2024938711544 counting only the distinct ones).

The product of its (nonzero) digits is 84934656, while the sum is 63.

The spelling of 18224448403869 in words is "eighteen trillion, two hundred twenty-four billion, four hundred forty-eight million, four hundred three thousand, eight hundred sixty-nine".