2168635996 has 12 divisors (see below), whose sum is σ = 3820584600. Its totient is φ = 1077040400.

The previous prime is 2168635981. The next prime is 2168636009. The reversal of 2168635996 is 6995368612.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1818730 + ... + 1819921.

It is an arithmetic number, because the mean of its divisors is an integer number (318382050).

Almost surely, 2^2168635996 is an apocalyptic number.

It is an amenable number.

2168635996 is a deficient number, since it is larger than the sum of its proper divisors (1651948604).

2168635996 is a wasteful number, since it uses less digits than its factorization.

2168635996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3638804 (or 3638802 counting only the distinct ones).

The product of its digits is 4199040, while the sum is 55.

The square root of 2168635996 is about 46568.6159983309. The cubic root of 2168635996 is about 1294.3812721864.

The spelling of 2168635996 in words is "two billion, one hundred sixty-eight million, six hundred thirty-five thousand, nine hundred ninety-six".