11813641 has 8 divisors (see below), whose sum is σ = 13703360. Its totient is φ = 9974448.

The previous prime is 11813621. The next prime is 11813653. The reversal of 11813641 is 14631811.

It is a happy number.

11813641 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 11813641 - 2⁵ = 11813609 is a prime.

It is a super-2 number, since 2×11813641² = 279124227353762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11813621) 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, 12126 + ... + 13063.

It is an arithmetic number, because the mean of its divisors is an integer number (1712920).

Almost surely, 2^11813641 is an apocalyptic number.

It is an amenable number.

11813641 is a deficient number, since it is larger than the sum of its proper divisors (1889719).

11813641 is an equidigital number, since it uses as much as digits as its factorization.

11813641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25263.

The product of its digits is 576, while the sum is 25.

The square root of 11813641 is about 3437.0977582839. The cubic root of 11813641 is about 227.7515054546.

The spelling of 11813641 in words is "eleven million, eight hundred thirteen thousand, six hundred forty-one".