13491641 has 8 divisors (see below), whose sum is σ = 14150280. Its totient is φ = 12845952.

The previous prime is 13491629. The next prime is 13491677. The reversal of 13491641 is 14619431.

It can be written as a sum of positive squares in 4 ways, for example, as 4515625 + 8976016 = 2125^2 + 2996^2 .

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 13491641 - 2¹⁴ = 13475257 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (13491601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1070 + ... + 5303.

It is an arithmetic number, because the mean of its divisors is an integer number (1768785).

Almost surely, 2^13491641 is an apocalyptic number.

It is an amenable number.

13491641 is a deficient number, since it is larger than the sum of its proper divisors (658639).

13491641 is an equidigital number, since it uses as much as digits as its factorization.

13491641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6475.

The product of its digits is 2592, while the sum is 29.

The square root of 13491641 is about 3673.0969222170. The cubic root of 13491641 is about 238.0610028878.

The spelling of 13491641 in words is "thirteen million, four hundred ninety-one thousand, six hundred forty-one".