2173291768 has 16 divisors (see below), whose sum is σ = 4076840160. Its totient is φ = 1086134400.

The previous prime is 2173291759. The next prime is 2173291787. The reversal of 2173291768 is 8671923712.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45568 + ... + 80143.

It is an arithmetic number, because the mean of its divisors is an integer number (254802510).

Almost surely, 2^2173291768 is an apocalyptic number.

It is an amenable number.

2173291768 is a deficient number, since it is larger than the sum of its proper divisors (1903548392).

2173291768 is a wasteful number, since it uses less digits than its factorization.

2173291768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127878 (or 127874 counting only the distinct ones).

The product of its digits is 254016, while the sum is 46.

The square root of 2173291768 is about 46618.5774986754. The cubic root of 2173291768 is about 1295.3068980401.

The spelling of 2173291768 in words is "two billion, one hundred seventy-three million, two hundred ninety-one thousand, seven hundred sixty-eight".