2100609208 has 16 divisors (see below), whose sum is σ = 4012957080. Its totient is φ = 1030487328.

The previous prime is 2100609191. The next prime is 2100609209. The reversal of 2100609208 is 8029060012.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100609209) 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, 2476710 + ... + 2477557.

Almost surely, 2^2100609208 is an apocalyptic number.

It is an amenable number.

2100609208 is a deficient number, since it is larger than the sum of its proper divisors (1912347872).

2100609208 is a wasteful number, since it uses less digits than its factorization.

2100609208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4954326 (or 4954322 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 2100609208 is about 45832.4034717797. The cubic root of 2100609208 is about 1280.7029846137.

The spelling of 2100609208 in words is "two billion, one hundred million, six hundred nine thousand, two hundred eight".