1002300809 has 2 divisors, whose sum is σ = 1002300810. Its totient is φ = 1002300808.

The previous prime is 1002300797. The next prime is 1002300811. The reversal of 1002300809 is 9080032001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 920940409 + 81360400 = 30347^2 + 9020^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1002300809 is a prime.

Together with 1002300811, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1002300839) 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, 501150404 + 501150405.

It is an arithmetic number, because the mean of its divisors is an integer number (501150405).

Almost surely, 2^1002300809 is an apocalyptic number.

It is an amenable number.

1002300809 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002300809 is an equidigital number, since it uses as much as digits as its factorization.

1002300809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 1002300809 is about 31659.1346849531. The cubic root of 1002300809 is about 1000.7663488927.

The spelling of 1002300809 in words is "one billion, two million, three hundred thousand, eight hundred nine".