2168383668 has 96 divisors (see below), whose sum is σ = 5720319360. Its totient is φ = 633507840.

The previous prime is 2168383667. The next prime is 2168383669. The reversal of 2168383668 is 8663838612.

It is an interprime number because it is at equal distance from previous prime (2168383667) and next prime (2168383669).

It is a self number, because there is not a number n which added to its sum of digits gives 2168383668.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2168383667) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 549928 + ... + 553856.

It is an arithmetic number, because the mean of its divisors is an integer number (59586660).

Almost surely, 2^2168383668 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2168383668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2860159680).

2168383668 is an abundant number, since it is smaller than the sum of its proper divisors (3551935692).

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

2168383668 is a wasteful number, since it uses less digits than its factorization.

2168383668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4097 (or 4095 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 51.

The square root of 2168383668 is about 46565.9067129590. The cubic root of 2168383668 is about 1294.3310683860.

The spelling of 2168383668 in words is "two billion, one hundred sixty-eight million, three hundred eighty-three thousand, six hundred sixty-eight".