418513368209 has 2 divisors, whose sum is σ = 418513368210. Its totient is φ = 418513368208.

The previous prime is 418513368083. The next prime is 418513368211. The reversal of 418513368209 is 902863315814.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 325552407184 + 92960961025 = 570572^2 + 304895^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-418513368209 is a prime.

Together with 418513368211, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (418513368509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 209256684104 + 209256684105.

It is an arithmetic number, because the mean of its divisors is an integer number (209256684105).

Almost surely, 2^418513368209 is an apocalyptic number.

It is an amenable number.

418513368209 is a deficient number, since it is larger than the sum of its proper divisors (1).

418513368209 is an equidigital number, since it uses as much as digits as its factorization.

418513368209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1244160, while the sum is 50.

The spelling of 418513368209 in words is "four hundred eighteen billion, five hundred thirteen million, three hundred sixty-eight thousand, two hundred nine".