2000637209 has 4 divisors (see below), whose sum is σ = 2007860004. Its totient is φ = 1993414416.

The previous prime is 2000637193. The next prime is 2000637217. The reversal of 2000637209 is 9027360002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1354460809 + 646176400 = 36803^2 + 25420^2 .

It is a cyclic number.

It is not a de Polignac number, because 2000637209 - 2⁴ = 2000637193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2000637409) 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 in 3 ways as a sum of consecutive naturals, for example, 3610982 + ... + 3611535.

It is an arithmetic number, because the mean of its divisors is an integer number (501965001).

Almost surely, 2^2000637209 is an apocalyptic number.

It is an amenable number.

2000637209 is a deficient number, since it is larger than the sum of its proper divisors (7222795).

2000637209 is an equidigital number, since it uses as much as digits as its factorization.

2000637209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7222794.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 2000637209 is about 44728.4831958339. The cubic root of 2000637209 is about 1260.0548411924.

The spelling of 2000637209 in words is "two billion, six hundred thirty-seven thousand, two hundred nine".