1129903009 has 2 divisors, whose sum is σ = 1129903010. Its totient is φ = 1129903008.

The previous prime is 1129903007. The next prime is 1129903043. The reversal of 1129903009 is 9003099211.

It is an a-pointer prime, because the next prime (1129903043) can be obtained adding 1129903009 to its sum of digits (34).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 861598609 + 268304400 = 29353^2 + 16380^2 .

It is a cyclic number.

It is not a de Polignac number, because 1129903009 - 2¹ = 1129903007 is a prime.

Together with 1129903007, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1129903007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 564951504 + 564951505.

It is an arithmetic number, because the mean of its divisors is an integer number (564951505).

Almost surely, 2^1129903009 is an apocalyptic number.

It is an amenable number.

1129903009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1129903009 is an equidigital number, since it uses as much as digits as its factorization.

1129903009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4374, while the sum is 34.

The square root of 1129903009 is about 33614.0299428676. The cubic root of 1129903009 is about 1041.5506358851.

The spelling of 1129903009 in words is "one billion, one hundred twenty-nine million, nine hundred three thousand, nine".