416018211809 has 2 divisors, whose sum is σ = 416018211810. Its totient is φ = 416018211808.

The previous prime is 416018211799. The next prime is 416018211893. The reversal of 416018211809 is 908112810614.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 415803149584 + 215062225 = 644828^2 + 14665^2 .

It is a cyclic number.

It is not a de Polignac number, because 416018211809 - 2⁴ = 416018211793 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (416018211409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 208009105904 + 208009105905.

It is an arithmetic number, because the mean of its divisors is an integer number (208009105905).

Almost surely, 2^416018211809 is an apocalyptic number.

It is an amenable number.

416018211809 is a deficient number, since it is larger than the sum of its proper divisors (1).

416018211809 is an equidigital number, since it uses as much as digits as its factorization.

416018211809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27648, while the sum is 41.

The spelling of 416018211809 in words is "four hundred sixteen billion, eighteen million, two hundred eleven thousand, eight hundred nine".