1002605009 has 8 divisors (see below), whose sum is σ = 1147824768. Its totient is φ = 857882880.

The previous prime is 1002605003. The next prime is 1002605011. The reversal of 1002605009 is 9005062001.

1002605009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1002605009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1002605003) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120077 + ... + 128154.

It is an arithmetic number, because the mean of its divisors is an integer number (143478096).

Almost surely, 2^1002605009 is an apocalyptic number.

It is an amenable number.

1002605009 is a deficient number, since it is larger than the sum of its proper divisors (145219759).

1002605009 is an equidigital number, since it uses as much as digits as its factorization.

1002605009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248815.

The product of its (nonzero) digits is 540, while the sum is 23.

The square root of 1002605009 is about 31663.9386210876. The cubic root of 1002605009 is about 1000.8675834147.

The spelling of 1002605009 in words is "one billion, two million, six hundred five thousand, nine".