1968617868 has 48 divisors (see below), whose sum is σ = 5262270720. Its totient is φ = 561109824.

The previous prime is 1968617851. The next prime is 1968617881. The reversal of 1968617868 is 8687168691.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7230 + ... + 63162.

It is an arithmetic number, because the mean of its divisors is an integer number (109630640).

Almost surely, 2^1968617868 is an apocalyptic number.

It is an amenable number.

1968617868 is an abundant number, since it is smaller than the sum of its proper divisors (3293652852).

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

1968617868 is a wasteful number, since it uses less digits than its factorization.

1968617868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56366 (or 56364 counting only the distinct ones).

The product of its digits is 6967296, while the sum is 60.

The square root of 1968617868 is about 44369.1093893037. The cubic root of 1968617868 is about 1253.2964442955.

The spelling of 1968617868 in words is "one billion, nine hundred sixty-eight million, six hundred seventeen thousand, eight hundred sixty-eight".