1680772732 has 24 divisors (see below), whose sum is σ = 2986062800. Its totient is φ = 827646336.

The previous prime is 1680772721. The next prime is 1680772811. The reversal of 1680772732 is 2372770861.

It is a congruent number.

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, 211894 + ... + 219682.

Almost surely, 2^1680772732 is an apocalyptic number.

It is an amenable number.

1680772732 is a deficient number, since it is larger than the sum of its proper divisors (1305290068).

1680772732 is a wasteful number, since it uses less digits than its factorization.

1680772732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8605 (or 8603 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 43.

The square root of 1680772732 is about 40997.2283453406. The cubic root of 1680772732 is about 1188.9666268491.

The spelling of 1680772732 in words is "one billion, six hundred eighty million, seven hundred seventy-two thousand, seven hundred thirty-two".