1680360782 has 8 divisors (see below), whose sum is σ = 2520748296. Its totient is φ = 840111352.

The previous prime is 1680360727. The next prime is 1680360811. The reversal of 1680360782 is 2870630861.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1680360782² = 5647224715367303048, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4913 + ... + 58179.

It is an arithmetic number, because the mean of its divisors is an integer number (315093537).

Almost surely, 2^1680360782 is an apocalyptic number.

1680360782 is a deficient number, since it is larger than the sum of its proper divisors (840387514).

1680360782 is a wasteful number, since it uses less digits than its factorization.

1680360782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69042.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 1680360782 is about 40992.2039173304. The cubic root of 1680360782 is about 1188.8694820828.

The spelling of 1680360782 in words is "one billion, six hundred eighty million, three hundred sixty thousand, seven hundred eighty-two".