1028666629 has 2 divisors, whose sum is σ = 1028666630. Its totient is φ = 1028666628.

The previous prime is 1028666623. The next prime is 1028666687. The reversal of 1028666629 is 9266668201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 849722500 + 178944129 = 29150^2 + 13377^2 .

It is a cyclic number.

It is not a de Polignac number, because 1028666629 - 2⁷ = 1028666501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1028666623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 514333314 + 514333315.

It is an arithmetic number, because the mean of its divisors is an integer number (514333315).

Almost surely, 2^1028666629 is an apocalyptic number.

It is an amenable number.

1028666629 is a deficient number, since it is larger than the sum of its proper divisors (1).

1028666629 is an equidigital number, since it uses as much as digits as its factorization.

1028666629 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 46.

The square root of 1028666629 is about 32072.8331925946. The cubic root of 1028666629 is about 1009.4656615477.

The spelling of 1028666629 in words is "one billion, twenty-eight million, six hundred sixty-six thousand, six hundred twenty-nine".