41643638 has 8 divisors (see below), whose sum is σ = 62688600. Its totient is φ = 20747440.

The previous prime is 41643631. The next prime is 41643647. The reversal of 41643638 is 83634614.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 41643598 and 41643607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (41643631) 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 in 3 ways as a sum of consecutive naturals, for example, 36488 + ... + 37611.

It is an arithmetic number, because the mean of its divisors is an integer number (7836075).

Almost surely, 2^41643638 is an apocalyptic number.

41643638 is a deficient number, since it is larger than the sum of its proper divisors (21044962).

41643638 is a wasteful number, since it uses less digits than its factorization.

41643638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74382.

The product of its digits is 41472, while the sum is 35.

The square root of 41643638 is about 6453.1882042910. The cubic root of 41643638 is about 346.6167566625.

The spelling of 41643638 in words is "forty-one million, six hundred forty-three thousand, six hundred thirty-eight".