13156841 has 4 divisors (see below), whose sum is σ = 13166292. Its totient is φ = 13147392.

The previous prime is 13156837. The next prime is 13156877. The reversal of 13156841 is 14865131.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 14865131 = 1103 ⋅13477.

It can be written as a sum of positive squares in 2 ways, for example, as 12931216 + 225625 = 3596^2 + 475^2 .

It is a cyclic number.

It is not a de Polignac number, because 13156841 - 2² = 13156837 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13156831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2180 + ... + 5573.

It is an arithmetic number, because the mean of its divisors is an integer number (3291573).

Almost surely, 2^13156841 is an apocalyptic number.

It is an amenable number.

13156841 is a deficient number, since it is larger than the sum of its proper divisors (9451).

13156841 is an equidigital number, since it uses as much as digits as its factorization.

13156841 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9450.

The product of its digits is 2880, while the sum is 29.

The square root of 13156841 is about 3627.2360000419. The cubic root of 13156841 is about 236.0752955665.

The spelling of 13156841 in words is "thirteen million, one hundred fifty-six thousand, eight hundred forty-one".