1069742789 has 2 divisors, whose sum is σ = 1069742790. Its totient is φ = 1069742788.

The previous prime is 1069742759. The next prime is 1069742873. The reversal of 1069742789 is 9872479601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 554225764 + 515517025 = 23542^2 + 22705^2 .

It is a cyclic number.

It is not a de Polignac number, because 1069742789 - 2⁸ = 1069742533 is a prime.

It is a super-2 number, since 2×1069742789² = 2288699269234997042, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1069742789.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1069742759) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 534871394 + 534871395.

It is an arithmetic number, because the mean of its divisors is an integer number (534871395).

Almost surely, 2^1069742789 is an apocalyptic number.

It is an amenable number.

1069742789 is a deficient number, since it is larger than the sum of its proper divisors (1).

1069742789 is an equidigital number, since it uses as much as digits as its factorization.

1069742789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1524096, while the sum is 53.

The square root of 1069742789 is about 32706.9226464368. The cubic root of 1069742789 is about 1022.7271595143.

The spelling of 1069742789 in words is "one billion, sixty-nine million, seven hundred forty-two thousand, seven hundred eighty-nine".