1681827716 has 12 divisors (see below), whose sum is σ = 2946293532. Its totient is φ = 840029568.

The previous prime is 1681827691. The next prime is 1681827727. The reversal of 1681827716 is 6177281861.

It can be written as a sum of positive squares in 2 ways, for example, as 364428100 + 1317399616 = 19090^2 + 36296^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216785 + ... + 224408.

It is an arithmetic number, because the mean of its divisors is an integer number (245524461).

Almost surely, 2^1681827716 is an apocalyptic number.

It is an amenable number.

1681827716 is a deficient number, since it is larger than the sum of its proper divisors (1264465816).

1681827716 is a wasteful number, since it uses less digits than its factorization.

1681827716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442150 (or 442148 counting only the distinct ones).

The product of its digits is 225792, while the sum is 47.

The square root of 1681827716 is about 41010.0928552960. The cubic root of 1681827716 is about 1189.2153375353.

The spelling of 1681827716 in words is "one billion, six hundred eighty-one million, eight hundred twenty-seven thousand, seven hundred sixteen".