2002009109 has 4 divisors (see below), whose sum is σ = 2066590080. Its totient is φ = 1937428140.

The previous prime is 2002009103. The next prime is 2002009127. The reversal of 2002009109 is 9019002002.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2002009109 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2002009103) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32290439 + ... + 32290500.

It is an arithmetic number, because the mean of its divisors is an integer number (516647520).

Almost surely, 2^2002009109 is an apocalyptic number.

It is an amenable number.

2002009109 is a deficient number, since it is larger than the sum of its proper divisors (64580971).

2002009109 is an equidigital number, since it uses as much as digits as its factorization.

2002009109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64580970.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 2002009109 is about 44743.8164331117. The cubic root of 2002009109 is about 1260.3427951578.

The spelling of 2002009109 in words is "two billion, two million, nine thousand, one hundred nine".