41981623 has 2 divisors, whose sum is σ = 41981624. Its totient is φ = 41981622.

The previous prime is 41981617. The next prime is 41981689. The reversal of 41981623 is 32618914.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 41981623 - 2⁵ = 41981591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41981123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20990811 + 20990812.

It is an arithmetic number, because the mean of its divisors is an integer number (20990812).

Almost surely, 2^41981623 is an apocalyptic number.

41981623 is a deficient number, since it is larger than the sum of its proper divisors (1).

41981623 is an equidigital number, since it uses as much as digits as its factorization.

41981623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 34.

The square root of 41981623 is about 6479.3227269523. The cubic root of 41981623 is about 347.5519595199.

The spelling of 41981623 in words is "forty-one million, nine hundred eighty-one thousand, six hundred twenty-three".