1931768168 has 64 divisors (see below), whose sum is σ = 4045075200. Its totient is φ = 857409280.

The previous prime is 1931768149. The next prime is 1931768173. The reversal of 1931768168 is 8618671391.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1113830 + ... + 1115562.

It is an arithmetic number, because the mean of its divisors is an integer number (63204300).

Almost surely, 2^1931768168 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 1931768168, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2022537600).

1931768168 is an abundant number, since it is smaller than the sum of its proper divisors (2113307032).

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

1931768168 is a wasteful number, since it uses less digits than its factorization.

1931768168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2042 (or 2038 counting only the distinct ones).

The product of its digits is 435456, while the sum is 50.

The square root of 1931768168 is about 43951.8846922404. The cubic root of 1931768168 is about 1245.4271676024.

The spelling of 1931768168 in words is "one billion, nine hundred thirty-one million, seven hundred sixty-eight thousand, one hundred sixty-eight".