1009229761 has 2 divisors, whose sum is σ = 1009229762. Its totient is φ = 1009229760.

The previous prime is 1009229759. The next prime is 1009229779. The reversal of 1009229761 is 1679229001.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 955119025 + 54110736 = 30905^2 + 7356^2 .

It is a cyclic number.

It is not a de Polignac number, because 1009229761 - 2¹ = 1009229759 is a prime.

Together with 1009229759, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1009229761.

It is not a weakly prime, because it can be changed into another prime (1009229461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 504614880 + 504614881.

It is an arithmetic number, because the mean of its divisors is an integer number (504614881).

Almost surely, 2^1009229761 is an apocalyptic number.

It is an amenable number.

1009229761 is a deficient number, since it is larger than the sum of its proper divisors (1).

1009229761 is an equidigital number, since it uses as much as digits as its factorization.

1009229761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 37.

The square root of 1009229761 is about 31768.3767448071. The cubic root of 1009229761 is about 1003.0671698509.

The spelling of 1009229761 in words is "one billion, nine million, two hundred twenty-nine thousand, seven hundred sixty-one".