1680694396 has 6 divisors (see below), whose sum is σ = 2941215200. Its totient is φ = 840347196.

The previous prime is 1680694361. The next prime is 1680694417. The reversal of 1680694396 is 6934960861.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210086796 + ... + 210086803.

Almost surely, 2^1680694396 is an apocalyptic number.

It is an amenable number.

1680694396 is a deficient number, since it is larger than the sum of its proper divisors (1260520804).

1680694396 is a wasteful number, since it uses less digits than its factorization.

1680694396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420173603 (or 420173601 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 52.

The square root of 1680694396 is about 40996.2729525502. The cubic root of 1680694396 is about 1188.9481551198.

The spelling of 1680694396 in words is "one billion, six hundred eighty million, six hundred ninety-four thousand, three hundred ninety-six".