13845648197 has 4 divisors (see below), whose sum is σ = 13846496076. Its totient is φ = 13844800320.

The previous prime is 13845648161. The next prime is 13845648199. The reversal of 13845648197 is 79184654831.

It is a happy number.

13845648197 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12867272356 + 978375841 = 113434^2 + 31279^2 .

It is a cyclic number.

It is not a de Polignac number, because 13845648197 - 2¹⁰ = 13845647173 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13845648199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 398954 + ... + 432267.

It is an arithmetic number, because the mean of its divisors is an integer number (3461624019).

Almost surely, 2^13845648197 is an apocalyptic number.

It is an amenable number.

13845648197 is a deficient number, since it is larger than the sum of its proper divisors (847879).

13845648197 is an equidigital number, since it uses as much as digits as its factorization.

13845648197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 847878.

The product of its digits is 5806080, while the sum is 56.

The spelling of 13845648197 in words is "thirteen billion, eight hundred forty-five million, six hundred forty-eight thousand, one hundred ninety-seven".