1680764396 has 24 divisors (see below), whose sum is σ = 3128077680. Its totient is φ = 787940352.

The previous prime is 1680764369. The next prime is 1680764401. The reversal of 1680764396 is 6934670861.

It is a super-2 number, since 2×1680764396² = 5649937909722489632, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106625 + ... + 121368.

It is an arithmetic number, because the mean of its divisors is an integer number (130336570).

Almost surely, 2^1680764396 is an apocalyptic number.

It is an amenable number.

1680764396 is a deficient number, since it is larger than the sum of its proper divisors (1447313284).

1680764396 is a wasteful number, since it uses less digits than its factorization.

1680764396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228113 (or 228111 counting only the distinct ones).

The product of its (nonzero) digits is 1306368, while the sum is 50.

The square root of 1680764396 is about 40997.1266798053. The cubic root of 1680764396 is about 1188.9646612369.

The spelling of 1680764396 in words is "one billion, six hundred eighty million, seven hundred sixty-four thousand, three hundred ninety-six".