1716681840 has 80 divisors (see below), whose sum is σ = 5381575200. Its totient is φ = 452632576.

The previous prime is 1716681829. The next prime is 1716681881. The reversal of 1716681840 is 481866171.

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 1716681792 and 1716681801.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18825 + ... + 61544.

It is an arithmetic number, because the mean of its divisors is an integer number (67269690).

Almost surely, 2^1716681840 is an apocalyptic number.

1716681840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1716681840 is an abundant number, since it is smaller than the sum of its proper divisors (3664893360).

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

1716681840 is a wasteful number, since it uses less digits than its factorization.

1716681840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80474 (or 80468 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 42.

The square root of 1716681840 is about 41432.8594234093. The cubic root of 1716681840 is about 1197.3743145592.

The spelling of 1716681840 in words is "one billion, seven hundred sixteen million, six hundred eighty-one thousand, eight hundred forty".