1668501964 has 12 divisors (see below), whose sum is σ = 3014068288. Its totient is φ = 807339600.

The previous prime is 1668501959. The next prime is 1668502001. The reversal of 1668501964 is 4691058661.

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, 6727707 + ... + 6727954.

Almost surely, 2^1668501964 is an apocalyptic number.

It is an amenable number.

1668501964 is a deficient number, since it is larger than the sum of its proper divisors (1345566324).

1668501964 is a wasteful number, since it uses less digits than its factorization.

1668501964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13455696 (or 13455694 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 46.

The square root of 1668501964 is about 40847.3005717636. The cubic root of 1668501964 is about 1186.0661389709.

The spelling of 1668501964 in words is "one billion, six hundred sixty-eight million, five hundred one thousand, nine hundred sixty-four".