1128629669 has 2 divisors, whose sum is σ = 1128629670. Its totient is φ = 1128629668.

The previous prime is 1128629653. The next prime is 1128629731. The reversal of 1128629669 is 9669268211.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 846053569 + 282576100 = 29087^2 + 16810^2 .

It is a cyclic number.

It is not a de Polignac number, because 1128629669 - 2⁴ = 1128629653 is a prime.

It is a super-2 number, since 2×1128629669² = 2547609859494099122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1128629069) 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, 564314834 + 564314835.

It is an arithmetic number, because the mean of its divisors is an integer number (564314835).

Almost surely, 2^1128629669 is an apocalyptic number.

It is an amenable number.

1128629669 is a deficient number, since it is larger than the sum of its proper divisors (1).

1128629669 is an equidigital number, since it uses as much as digits as its factorization.

1128629669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 559872, while the sum is 50.

The square root of 1128629669 is about 33595.0840004903. The cubic root of 1128629669 is about 1041.1592316107.

The spelling of 1128629669 in words is "one billion, one hundred twenty-eight million, six hundred twenty-nine thousand, six hundred sixty-nine".