1680959823 has 8 divisors (see below), whose sum is σ = 2253801600. Its totient is φ = 1114378968.

The previous prime is 1680959803. The next prime is 1680959893. The reversal of 1680959823 is 3289590861.

It is a happy number.

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

It is not a de Polignac number, because 1680959823 - 2⁶ = 1680959759 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1680959803) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1564603 + ... + 1565676.

It is an arithmetic number, because the mean of its divisors is an integer number (281725200).

Almost surely, 2^1680959823 is an apocalyptic number.

1680959823 is a deficient number, since it is larger than the sum of its proper divisors (572841777).

1680959823 is a wasteful number, since it uses less digits than its factorization.

1680959823 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3130461.

The product of its (nonzero) digits is 933120, while the sum is 51.

The square root of 1680959823 is about 40999.5100336577. The cubic root of 1680959823 is about 1189.0107408247.

The spelling of 1680959823 in words is "one billion, six hundred eighty million, nine hundred fifty-nine thousand, eight hundred twenty-three".