1681840922 has 8 divisors (see below), whose sum is σ = 2522961696. Its totient is φ = 840853692.

The previous prime is 1681840837. The next prime is 1681840939. The reversal of 1681840922 is 2290481861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1681840922.

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, 8723 + ... + 58649.

It is an arithmetic number, because the mean of its divisors is an integer number (315370212).

Almost surely, 2^1681840922 is an apocalyptic number.

1681840922 is a deficient number, since it is larger than the sum of its proper divisors (841120774).

1681840922 is a wasteful number, since it uses less digits than its factorization.

1681840922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66772.

The product of its (nonzero) digits is 55296, while the sum is 41.

The square root of 1681840922 is about 41010.2538641253. The cubic root of 1681840922 is about 1189.2184501682.

The spelling of 1681840922 in words is "one billion, six hundred eighty-one million, eight hundred forty thousand, nine hundred twenty-two".