41820013 has 2 divisors, whose sum is σ = 41820014. Its totient is φ = 41820012.

The previous prime is 41819977. The next prime is 41820043. The reversal of 41820013 is 31002814.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26904969 + 14915044 = 5187^2 + 3862^2 .

It is a cyclic number.

It is not a de Polignac number, because 41820013 - 2¹³ = 41811821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (41820043) 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, 20910006 + 20910007.

It is an arithmetic number, because the mean of its divisors is an integer number (20910007).

Almost surely, 2^41820013 is an apocalyptic number.

It is an amenable number.

41820013 is a deficient number, since it is larger than the sum of its proper divisors (1).

41820013 is an equidigital number, since it uses as much as digits as its factorization.

41820013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 41820013 is about 6466.8394908178. The cubic root of 41820013 is about 347.1054141332.

Adding to 41820013 its reverse (31002814), we get a palindrome (72822827).

The spelling of 41820013 in words is "forty-one million, eight hundred twenty thousand, thirteen".