41638111 has 2 divisors, whose sum is σ = 41638112. Its totient is φ = 41638110.

The previous prime is 41638097. The next prime is 41638133. The reversal of 41638111 is 11183614.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 41638111 - 2⁷ = 41637983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41638141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20819055 + 20819056.

It is an arithmetic number, because the mean of its divisors is an integer number (20819056).

Almost surely, 2^41638111 is an apocalyptic number.

41638111 is a deficient number, since it is larger than the sum of its proper divisors (1).

41638111 is an equidigital number, since it uses as much as digits as its factorization.

41638111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 576, while the sum is 25.

The square root of 41638111 is about 6452.7599521445. The cubic root of 41638111 is about 346.6014215024.

The spelling of 41638111 in words is "forty-one million, six hundred thirty-eight thousand, one hundred eleven".