41838509 has 2 divisors, whose sum is σ = 41838510. Its totient is φ = 41838508.

The previous prime is 41838487. The next prime is 41838521. The reversal of 41838509 is 90583814.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21362884 + 20475625 = 4622^2 + 4525^2 .

It is a cyclic number.

It is not a de Polignac number, because 41838509 - 2²⁰ = 40789933 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41838539) 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, 20919254 + 20919255.

It is an arithmetic number, because the mean of its divisors is an integer number (20919255).

Almost surely, 2^41838509 is an apocalyptic number.

It is an amenable number.

41838509 is a deficient number, since it is larger than the sum of its proper divisors (1).

41838509 is an equidigital number, since it uses as much as digits as its factorization.

41838509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 41838509 is about 6468.2693976055. The cubic root of 41838509 is about 347.1565787554.

The spelling of 41838509 in words is "forty-one million, eight hundred thirty-eight thousand, five hundred nine".