1668683512 has 24 divisors (see below), whose sum is σ = 3302127000. Its totient is φ = 790427664.

The previous prime is 1668683509. The next prime is 1668683537. The reversal of 1668683512 is 2153868661.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 286012 + ... + 291787.

It is an arithmetic number, because the mean of its divisors is an integer number (137588625).

Almost surely, 2^1668683512 is an apocalyptic number.

It is an amenable number.

1668683512 is a deficient number, since it is larger than the sum of its proper divisors (1633443488).

1668683512 is a wasteful number, since it uses less digits than its factorization.

1668683512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577843 (or 577820 counting only the distinct ones).

The product of its digits is 414720, while the sum is 46.

The square root of 1668683512 is about 40849.5227879103. The cubic root of 1668683512 is about 1186.1091556271.

The spelling of 1668683512 in words is "one billion, six hundred sixty-eight million, six hundred eighty-three thousand, five hundred twelve".