22818033938 has 18 divisors (see below), whose sum is σ = 39817750311. Its totient is φ = 9778516524.

The previous prime is 22818033937. The next prime is 22818033943. The reversal of 22818033938 is 83933081822.

It can be written as a sum of positive squares in only one way, i.e., 11409016969 + 11409016969 = 106813^2 + 106813^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=106813.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 22818033892 and 22818033901.

It is not an unprimeable number, because it can be changed into a prime (22818033937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1487753 + ... + 1503011.

Almost surely, 2^22818033938 is an apocalyptic number.

22818033938 is a deficient number, since it is larger than the sum of its proper divisors (16999716373).

22818033938 is an frugal number, since it uses more digits than its factorization.

22818033938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30534 (or 15268 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 47.

The spelling of 22818033938 in words is "twenty-two billion, eight hundred eighteen million, thirty-three thousand, nine hundred thirty-eight".