2100679808 has 16 divisors (see below), whose sum is σ = 4184948310. Its totient is φ = 1050339840.

The previous prime is 2100679799. The next prime is 2100679811. The reversal of 2100679808 is 8089760012.

It can be written as a sum of positive squares in only one way, i.e., 2100572224 + 107584 = 45832^2 + 328^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8205653 + ... + 8205908.

Almost surely, 2^2100679808 is an apocalyptic number.

It is an amenable number.

2100679808 is a deficient number, since it is larger than the sum of its proper divisors (2084268502).

2100679808 is an equidigital number, since it uses as much as digits as its factorization.

2100679808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16411575 (or 16411563 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 2100679808 is about 45833.1736627522. The cubic root of 2100679808 is about 1280.7173322955.

The spelling of 2100679808 in words is "two billion, one hundred million, six hundred seventy-nine thousand, eight hundred eight".