13185641 has 8 divisors (see below), whose sum is σ = 15437184. Its totient is φ = 11026080.

The previous prime is 13185637. The next prime is 13185643. The reversal of 13185641 is 14658131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13185641 - 2² = 13185637 is a prime.

It is a super-2 number, since 2×13185641² = 347722257161762, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13185643) 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 7 ways as a sum of consecutive naturals, for example, 22685 + ... + 23258.

It is an arithmetic number, because the mean of its divisors is an integer number (1929648).

Almost surely, 2^13185641 is an apocalyptic number.

It is an amenable number.

13185641 is a deficient number, since it is larger than the sum of its proper divisors (2251543).

13185641 is an equidigital number, since it uses as much as digits as its factorization.

13185641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45991.

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

The square root of 13185641 is about 3631.2037948868. The cubic root of 13185641 is about 236.2474243628.

The spelling of 13185641 in words is "thirteen million, one hundred eighty-five thousand, six hundred forty-one".