1043007661 has 2 divisors, whose sum is σ = 1043007662. Its totient is φ = 1043007660.

The previous prime is 1043007653. The next prime is 1043007671. The reversal of 1043007661 is 1667003401.

1043007661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 745617636 + 297390025 = 27306^2 + 17245^2 .

It is a cyclic number.

It is not a de Polignac number, because 1043007661 - 2³ = 1043007653 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1043007671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 521503830 + 521503831.

It is an arithmetic number, because the mean of its divisors is an integer number (521503831).

Almost surely, 2^1043007661 is an apocalyptic number.

It is an amenable number.

1043007661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1043007661 is an equidigital number, since it uses as much as digits as its factorization.

1043007661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 1043007661 is about 32295.6291315094. The cubic root of 1043007661 is about 1014.1351433123.

The spelling of 1043007661 in words is "one billion, forty-three million, seven thousand, six hundred sixty-one".