1679439818 has 64 divisors (see below), whose sum is σ = 3058483200. Its totient is φ = 690606000.

The previous prime is 1679439803. The next prime is 1679439821. The reversal of 1679439818 is 8189349761.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3210905 + ... + 3211427.

It is an arithmetic number, because the mean of its divisors is an integer number (47788800).

Almost surely, 2^1679439818 is an apocalyptic number.

1679439818 is a deficient number, since it is larger than the sum of its proper divisors (1379043382).

1679439818 is a wasteful number, since it uses less digits than its factorization.

1679439818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 728 (or 714 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 56.

The square root of 1679439818 is about 40980.9689734150. The cubic root of 1679439818 is about 1188.6522457812.

The spelling of 1679439818 in words is "one billion, six hundred seventy-nine million, four hundred thirty-nine thousand, eight hundred eighteen".