11641871 has 2 divisors, whose sum is σ = 11641872. Its totient is φ = 11641870.

The previous prime is 11641867. The next prime is 11641873. The reversal of 11641871 is 17814611.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 11641871 - 2² = 11641867 is a prime.

Together with 11641873, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11641873) 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 as a sum of consecutive naturals, namely, 5820935 + 5820936.

It is an arithmetic number, because the mean of its divisors is an integer number (5820936).

Almost surely, 2^11641871 is an apocalyptic number.

11641871 is a deficient number, since it is larger than the sum of its proper divisors (1).

11641871 is an equidigital number, since it uses as much as digits as its factorization.

11641871 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1344, while the sum is 29.

The square root of 11641871 is about 3412.0186107347. The cubic root of 11641871 is about 226.6422784699.

The spelling of 11641871 in words is "eleven million, six hundred forty-one thousand, eight hundred seventy-one".