11882191 has 4 divisors (see below), whose sum is σ = 12398832. Its totient is φ = 11365552.

The previous prime is 11882179. The next prime is 11882203. The reversal of 11882191 is 19128811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19128811 = 13 ⋅1471447.

It is an interprime number because it is at equal distance from previous prime (11882179) and next prime (11882203).

It is a cyclic number.

It is not a de Polignac number, because 11882191 - 2¹³ = 11873999 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11885191) 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, 258286 + ... + 258331.

It is an arithmetic number, because the mean of its divisors is an integer number (3099708).

Almost surely, 2^11882191 is an apocalyptic number.

11882191 is a deficient number, since it is larger than the sum of its proper divisors (516641).

11882191 is an equidigital number, since it uses as much as digits as its factorization.

11882191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 516640.

The product of its digits is 1152, while the sum is 31.

The square root of 11882191 is about 3447.0554100565. The cubic root of 11882191 is about 228.1911741720.

The spelling of 11882191 in words is "eleven million, eight hundred eighty-two thousand, one hundred ninety-one".