1680342835 has 16 divisors (see below), whose sum is σ = 2046431520. Its totient is φ = 1324304640.

The previous prime is 1680342821. The next prime is 1680342841. The reversal of 1680342835 is 5382430861.

It is not a de Polignac number, because 1680342835 - 2⁷ = 1680342707 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 385096 + ... + 389434.

It is an arithmetic number, because the mean of its divisors is an integer number (127901970).

Almost surely, 2^1680342835 is an apocalyptic number.

1680342835 is a deficient number, since it is larger than the sum of its proper divisors (366088685).

1680342835 is a wasteful number, since it uses less digits than its factorization.

1680342835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5478.

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 1680342835 is about 40991.9850092674. The cubic root of 1680342835 is about 1188.8652495162.

The spelling of 1680342835 in words is "one billion, six hundred eighty million, three hundred forty-two thousand, eight hundred thirty-five".