1002203009 has 2 divisors, whose sum is σ = 1002203010. Its totient is φ = 1002203008.

The previous prime is 1002202987. The next prime is 1002203017. The reversal of 1002203009 is 9003022001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 812535025 + 189667984 = 28505^2 + 13772^2 .

It is an emirp because it is prime and its reverse (9003022001) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1002203009 - 2⁸ = 1002202753 is a prime.

It is not a weakly prime, because it can be changed into another prime (1002203039) 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, 501101504 + 501101505.

It is an arithmetic number, because the mean of its divisors is an integer number (501101505).

Almost surely, 2^1002203009 is an apocalyptic number.

It is an amenable number.

1002203009 is a deficient number, since it is larger than the sum of its proper divisors (1).

1002203009 is an equidigital number, since it uses as much as digits as its factorization.

1002203009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 1002203009 is about 31657.5900693657. The cubic root of 1002203009 is about 1000.7337977425.

The spelling of 1002203009 in words is "one billion, two million, two hundred three thousand, nine".