13821835229 has 4 divisors (see below), whose sum is σ = 13851817980. Its totient is φ = 13791852480.

The previous prime is 13821835213. The next prime is 13821835249. The reversal of 13821835229 is 92253812831.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8536836025 + 5284999204 = 92395^2 + 72698^2 .

It is a cyclic number.

It is not a de Polignac number, because 13821835229 - 2⁴ = 13821835213 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13821835229.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13821835249) 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 in 3 ways as a sum of consecutive naturals, for example, 14990684 + ... + 14991605.

It is an arithmetic number, because the mean of its divisors is an integer number (3462954495).

Almost surely, 2^13821835229 is an apocalyptic number.

It is an amenable number.

13821835229 is a deficient number, since it is larger than the sum of its proper divisors (29982751).

13821835229 is an equidigital number, since it uses as much as digits as its factorization.

13821835229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29982750.

The product of its digits is 207360, while the sum is 44.

The spelling of 13821835229 in words is "thirteen billion, eight hundred twenty-one million, eight hundred thirty-five thousand, two hundred twenty-nine".