1680569164 has 6 divisors (see below), whose sum is σ = 2940996044. Its totient is φ = 840284580.

The previous prime is 1680569159. The next prime is 1680569167. The reversal of 1680569164 is 4619650861.

It is not an unprimeable number, because it can be changed into a prime (1680569167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210071142 + ... + 210071149.

Almost surely, 2^1680569164 is an apocalyptic number.

It is an amenable number.

1680569164 is a deficient number, since it is larger than the sum of its proper divisors (1260426880).

1680569164 is a wasteful number, since it uses less digits than its factorization.

1680569164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420142295 (or 420142293 counting only the distinct ones).

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

The square root of 1680569164 is about 40994.7455657429. The cubic root of 1680569164 is about 1188.9186240613.

The spelling of 1680569164 in words is "one billion, six hundred eighty million, five hundred sixty-nine thousand, one hundred sixty-four".