2168668536 has 32 divisors (see below), whose sum is σ = 5547759360. Its totient is φ = 706077792.

The previous prime is 2168668483. The next prime is 2168668549. The reversal of 2168668536 is 6358668612.

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 7 ways as a sum of consecutive naturals, for example, 1049680 + ... + 1051743.

It is an arithmetic number, because the mean of its divisors is an integer number (173367480).

Almost surely, 2^2168668536 is an apocalyptic number.

It is an amenable number.

2168668536 is an abundant number, since it is smaller than the sum of its proper divisors (3379090824).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2168668536 is a wasteful number, since it uses less digits than its factorization.

2168668536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2101475 (or 2101471 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 51.

The square root of 2168668536 is about 46568.9653739483. The cubic root of 2168668536 is about 1294.3877461415.

The spelling of 2168668536 in words is "two billion, one hundred sixty-eight million, six hundred sixty-eight thousand, five hundred thirty-six".