1668500648 has 32 divisors (see below), whose sum is σ = 3211293600. Its totient is φ = 812421312.

The previous prime is 1668500627. The next prime is 1668500677. The reversal of 1668500648 is 8460058661.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1668500599 and 1668500608.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33986 + ... + 67022.

It is an arithmetic number, because the mean of its divisors is an integer number (100352925).

Almost surely, 2^1668500648 is an apocalyptic number.

It is an amenable number.

1668500648 is a deficient number, since it is larger than the sum of its proper divisors (1542792952).

1668500648 is a wasteful number, since it uses less digits than its factorization.

1668500648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33209 (or 33205 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 44.

The square root of 1668500648 is about 40847.2844629848. The cubic root of 1668500648 is about 1186.0658271416.

The spelling of 1668500648 in words is "one billion, six hundred sixty-eight million, five hundred thousand, six hundred forty-eight".