11688191 has 4 divisors (see below), whose sum is σ = 11780352. Its totient is φ = 11596032.

The previous prime is 11688181. The next prime is 11688203. The reversal of 11688191 is 19188611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19188611 = 13 ⋅1476047.

It is a cyclic number.

It is not a de Polignac number, because 11688191 - 2²² = 7493887 is a prime.

It is a super-2 number, since 2×11688191² = 273227617704962, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11688121) 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, 45890 + ... + 46143.

It is an arithmetic number, because the mean of its divisors is an integer number (2945088).

Almost surely, 2^11688191 is an apocalyptic number.

11688191 is a deficient number, since it is larger than the sum of its proper divisors (92161).

11688191 is an equidigital number, since it uses as much as digits as its factorization.

11688191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92160.

The product of its digits is 3456, while the sum is 35.

The square root of 11688191 is about 3418.7996431496. The cubic root of 11688191 is about 226.9424644106.

The spelling of 11688191 in words is "eleven million, six hundred eighty-eight thousand, one hundred ninety-one".