1679805812 has 12 divisors (see below), whose sum is σ = 2939988576. Its totient is φ = 839809080.

The previous prime is 1679805767. The next prime is 1679805823. The reversal of 1679805812 is 2185089761.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 30737 + ... + 65607.

It is an arithmetic number, because the mean of its divisors is an integer number (244999048).

Almost surely, 2^1679805812 is an apocalyptic number.

It is an amenable number.

1679805812 is a deficient number, since it is larger than the sum of its proper divisors (1260182764).

1679805812 is a wasteful number, since it uses less digits than its factorization.

1679805812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46918 (or 46916 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 47.

The square root of 1679805812 is about 40985.4341443396. The cubic root of 1679805812 is about 1188.7385856800.

The spelling of 1679805812 in words is "one billion, six hundred seventy-nine million, eight hundred five thousand, eight hundred twelve".