1666883672 has 32 divisors (see below), whose sum is σ = 3148470000. Its totient is φ = 827315328.

The previous prime is 1666883653. The next prime is 1666883681. The reversal of 1666883672 is 2763886661.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 711479 + ... + 713817.

Almost surely, 2^1666883672 is an apocalyptic number.

It is an amenable number.

1666883672 is a deficient number, since it is larger than the sum of its proper divisors (1481586328).

1666883672 is a wasteful number, since it uses less digits than its factorization.

1666883672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2963 (or 2959 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 53.

The square root of 1666883672 is about 40827.4867215703. The cubic root of 1666883672 is about 1185.6825569180.

The spelling of 1666883672 in words is "one billion, six hundred sixty-six million, eight hundred eighty-three thousand, six hundred seventy-two".