1680013923 has 16 divisors (see below), whose sum is σ = 2560594176. Its totient is φ = 959793120.

The previous prime is 1680013891. The next prime is 1680013939. The reversal of 1680013923 is 3293100861.

It is not a de Polignac number, because 1680013923 - 2⁵ = 1680013891 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1680013943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 175540 + ... + 184862.

It is an arithmetic number, because the mean of its divisors is an integer number (160037136).

Almost surely, 2^1680013923 is an apocalyptic number.

1680013923 is a deficient number, since it is larger than the sum of its proper divisors (880580253).

1680013923 is an equidigital number, since it uses as much as digits as its factorization.

1680013923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17914.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 1680013923 is about 40987.9729066954. The cubic root of 1680013923 is about 1188.7876745604.

The spelling of 1680013923 in words is "one billion, six hundred eighty million, thirteen thousand, nine hundred twenty-three".