2818107401909 has 2 divisors, whose sum is σ = 2818107401910. Its totient is φ = 2818107401908.

The previous prime is 2818107401899. The next prime is 2818107401911. The reversal of 2818107401909 is 9091047018182.

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., 2634599691025 + 183507710884 = 1623145^2 + 428378^2 .

It is a cyclic number.

It is not a de Polignac number, because 2818107401909 - 2⁸ = 2818107401653 is a prime.

It is a Sophie Germain prime.

Together with 2818107401911, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2818107401959) 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, 1409053700954 + 1409053700955.

It is an arithmetic number, because the mean of its divisors is an integer number (1409053700955).

Almost surely, 2^{2818107401909} is an apocalyptic number.

It is an amenable number.

2818107401909 is a deficient number, since it is larger than the sum of its proper divisors (1).

2818107401909 is an equidigital number, since it uses as much as digits as its factorization.

2818107401909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 290304, while the sum is 50.

The spelling of 2818107401909 in words is "two trillion, eight hundred eighteen billion, one hundred seven million, four hundred one thousand, nine hundred nine".