1228113683917 has 2 divisors, whose sum is σ = 1228113683918. Its totient is φ = 1228113683916.

The previous prime is 1228113683893. The next prime is 1228113683933. The reversal of 1228113683917 is 7193863118221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1223525789161 + 4587894756 = 1106131^2 + 67734^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1228113683917 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1228113623917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 614056841958 + 614056841959.

It is an arithmetic number, because the mean of its divisors is an integer number (614056841959).

Almost surely, 2^{1228113683917} is an apocalyptic number.

It is an amenable number.

1228113683917 is a deficient number, since it is larger than the sum of its proper divisors (1).

1228113683917 is an equidigital number, since it uses as much as digits as its factorization.

1228113683917 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 870912, while the sum is 52.

The spelling of 1228113683917 in words is "one trillion, two hundred twenty-eight billion, one hundred thirteen million, six hundred eighty-three thousand, nine hundred seventeen".