22493845138 has 16 divisors (see below), whose sum is σ = 34405690176. Its totient is φ = 11027444400.

The previous prime is 22493845133. The next prime is 22493845147. The reversal of 22493845138 is 83154839422.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 22493845091 and 22493845100.

It is not an unprimeable number, because it can be changed into a prime (22493845133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 519756 + ... + 561367.

It is an arithmetic number, because the mean of its divisors is an integer number (2150355636).

Almost surely, 2^22493845138 is an apocalyptic number.

22493845138 is a deficient number, since it is larger than the sum of its proper divisors (11911845038).

22493845138 is a wasteful number, since it uses less digits than its factorization.

22493845138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1081329.

The product of its digits is 1658880, while the sum is 49.

It can be divided in two parts, 2249384 and 5138, that added together give a palindrome (2254522).

The spelling of 22493845138 in words is "twenty-two billion, four hundred ninety-three million, eight hundred forty-five thousand, one hundred thirty-eight".