22749689438 has 16 divisors (see below), whose sum is σ = 39169776480. Its totient is φ = 9707289696.

The previous prime is 22749689437. The next prime is 22749689441. The reversal of 22749689438 is 83498694722.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22749689437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3544781 + ... + 3551192.

It is an arithmetic number, because the mean of its divisors is an integer number (2448111030).

Almost surely, 2^22749689438 is an apocalyptic number.

22749689438 is a deficient number, since it is larger than the sum of its proper divisors (16420087042).

22749689438 is a wasteful number, since it uses less digits than its factorization.

22749689438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7096211.

The product of its digits is 41803776, while the sum is 62.

The spelling of 22749689438 in words is "twenty-two billion, seven hundred forty-nine million, six hundred eighty-nine thousand, four hundred thirty-eight".