11541813 has 4 divisors (see below), whose sum is σ = 15389088. Its totient is φ = 7694540.

The previous prime is 11541809. The next prime is 11541823. The reversal of 11541813 is 31814511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11541813 - 2² = 11541809 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11541823) 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, 1923633 + ... + 1923638.

It is an arithmetic number, because the mean of its divisors is an integer number (3847272).

Almost surely, 2^11541813 is an apocalyptic number.

It is an amenable number.

11541813 is a deficient number, since it is larger than the sum of its proper divisors (3847275).

11541813 is an equidigital number, since it uses as much as digits as its factorization.

11541813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3847274.

The product of its digits is 480, while the sum is 24.

The square root of 11541813 is about 3397.3243883974. The cubic root of 11541813 is about 225.9911044088.

The spelling of 11541813 in words is "eleven million, five hundred forty-one thousand, eight hundred thirteen".