11191841 has 4 divisors (see below), whose sum is σ = 11201712. Its totient is φ = 11181972.

The previous prime is 11191787. The next prime is 11191847. The reversal of 11191841 is 14819111.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 11191841 - 2¹⁴ = 11175457 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11191841.

It is not an unprimeable number, because it can be changed into a prime (11191847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2975 + ... + 5588.

It is an arithmetic number, because the mean of its divisors is an integer number (2800428).

Almost surely, 2^11191841 is an apocalyptic number.

It is an amenable number.

11191841 is a deficient number, since it is larger than the sum of its proper divisors (9871).

11191841 is an equidigital number, since it uses as much as digits as its factorization.

11191841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9870.

The product of its digits is 288, while the sum is 26.

The square root of 11191841 is about 3345.4209002755. The cubic root of 11191841 is about 223.6834455570.

The spelling of 11191841 in words is "eleven million, one hundred ninety-one thousand, eight hundred forty-one".