1284636115249 has 2 divisors, whose sum is σ = 1284636115250. Its totient is φ = 1284636115248.

The previous prime is 1284636115237. The next prime is 1284636115277. The reversal of 1284636115249 is 9425116364821.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1156769083024 + 127867032225 = 1075532^2 + 357585^2 .

It is a cyclic number.

It is not a de Polignac number, because 1284636115249 - 2²¹ = 1284634018097 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1284636115196 and 1284636115205.

It is not a weakly prime, because it can be changed into another prime (1284636115549) 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, 642318057624 + 642318057625.

It is an arithmetic number, because the mean of its divisors is an integer number (642318057625).

Almost surely, 2^{1284636115249} is an apocalyptic number.

It is an amenable number.

1284636115249 is a deficient number, since it is larger than the sum of its proper divisors (1).

1284636115249 is an equidigital number, since it uses as much as digits as its factorization.

1284636115249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2488320, while the sum is 52.

The spelling of 1284636115249 in words is "one trillion, two hundred eighty-four billion, six hundred thirty-six million, one hundred fifteen thousand, two hundred forty-nine".