13823785838 has 4 divisors (see below), whose sum is σ = 20735678760. Its totient is φ = 6911892918.

The previous prime is 13823785837. The next prime is 13823785847. The reversal of 13823785838 is 83858732831.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13823785837) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3455946458 + ... + 3455946461.

It is an arithmetic number, because the mean of its divisors is an integer number (5183919690).

Almost surely, 2^13823785838 is an apocalyptic number.

13823785838 is a deficient number, since it is larger than the sum of its proper divisors (6911892922).

13823785838 is an equidigital number, since it uses as much as digits as its factorization.

13823785838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6911892921.

The product of its digits is 7741440, while the sum is 56.

The spelling of 13823785838 in words is "thirteen billion, eight hundred twenty-three million, seven hundred eighty-five thousand, eight hundred thirty-eight".