1028607658849 has 2 divisors, whose sum is σ = 1028607658850. Its totient is φ = 1028607658848.

The previous prime is 1028607658843. The next prime is 1028607658853. The reversal of 1028607658849 is 9488567068201.

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., 685820828449 + 342786830400 = 828143^2 + 585480^2 .

It is a cyclic number.

It is not a de Polignac number, because 1028607658849 - 2¹⁷ = 1028607527777 is a prime.

It is not a weakly prime, because it can be changed into another prime (1028607658843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 514303829424 + 514303829425.

It is an arithmetic number, because the mean of its divisors is an integer number (514303829425).

Almost surely, 2^{1028607658849} is an apocalyptic number.

It is an amenable number.

1028607658849 is a deficient number, since it is larger than the sum of its proper divisors (1).

1028607658849 is an equidigital number, since it uses as much as digits as its factorization.

1028607658849 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46448640, while the sum is 64.

The spelling of 1028607658849 in words is "one trillion, twenty-eight billion, six hundred seven million, six hundred fifty-eight thousand, eight hundred forty-nine".