11891795 has 4 divisors (see below), whose sum is σ = 14270160. Its totient is φ = 9513432.

The previous prime is 11891771. The next prime is 11891797. The reversal of 11891795 is 59719811.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11891795 - 2¹⁰ = 11890771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11891797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1189175 + ... + 1189184.

It is an arithmetic number, because the mean of its divisors is an integer number (3567540).

Almost surely, 2^11891795 is an apocalyptic number.

11891795 is a deficient number, since it is larger than the sum of its proper divisors (2378365).

11891795 is an equidigital number, since it uses as much as digits as its factorization.

11891795 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2378364.

The product of its digits is 22680, while the sum is 41.

The square root of 11891795 is about 3448.4482017278. The cubic root of 11891795 is about 228.2526375236.

The spelling of 11891795 in words is "eleven million, eight hundred ninety-one thousand, seven hundred ninety-five".