1001010009 has 4 divisors (see below), whose sum is σ = 1334680016. Its totient is φ = 667340004.

The previous prime is 1001009987. The next prime is 1001010011. The reversal of 1001010009 is 9000101001.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 1001010009 - 2¹¹ = 1001007961 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1001009976 and 1001010003.

It is not an unprimeable number, because it can be changed into a prime (1001010509) 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 in 3 ways as a sum of consecutive naturals, for example, 166834999 + ... + 166835004.

It is an arithmetic number, because the mean of its divisors is an integer number (333670004).

Almost surely, 2^1001010009 is an apocalyptic number.

It is an amenable number.

1001010009 is a deficient number, since it is larger than the sum of its proper divisors (333670007).

1001010009 is an equidigital number, since it uses as much as digits as its factorization.

1001010009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333670006.

The product of its (nonzero) digits is 9, while the sum is 12.

The square root of 1001010009 is about 31638.7422158341. The cubic root of 1001010009 is about 1000.3365563838.

The spelling of 1001010009 in words is "one billion, one million, ten thousand, nine".