1668650168 has 8 divisors (see below), whose sum is σ = 3128719080. Its totient is φ = 834325080.

The previous prime is 1668650149. The next prime is 1668650171. The reversal of 1668650168 is 8610568661.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 104290628 + ... + 104290643.

It is an arithmetic number, because the mean of its divisors is an integer number (391089885).

Almost surely, 2^1668650168 is an apocalyptic number.

It is an amenable number.

1668650168 is a deficient number, since it is larger than the sum of its proper divisors (1460068912).

1668650168 is a wasteful number, since it uses less digits than its factorization.

1668650168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208581277 (or 208581273 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 47.

The square root of 1668650168 is about 40849.1146538086. The cubic root of 1668650168 is about 1186.1012552100.

The spelling of 1668650168 in words is "one billion, six hundred sixty-eight million, six hundred fifty thousand, one hundred sixty-eight".