1679129856 has 108 divisors (see below), whose sum is σ = 4972444932. Its totient is φ = 544555008.

The previous prime is 1679129779. The next prime is 1679129863. The reversal of 1679129856 is 6589219761.

It can be written as a sum of positive squares in 2 ways, for example, as 877107456 + 802022400 = 29616^2 + 28320^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 75400 + ... + 95096.

Almost surely, 2^1679129856 is an apocalyptic number.

1679129856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1679129856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2486222466).

1679129856 is an abundant number, since it is smaller than the sum of its proper divisors (3293315076).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1679129856 is a wasteful number, since it uses less digits than its factorization.

1679129856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19756 (or 19739 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 54.

The square root of 1679129856 is about 40977.1870191208. The cubic root of 1679129856 is about 1188.5791143135.

The spelling of 1679129856 in words is "one billion, six hundred seventy-nine million, one hundred twenty-nine thousand, eight hundred fifty-six".