1681882 has 4 divisors (see below), whose sum is σ = 2522826. Its totient is φ = 840940.

The previous prime is 1681879. The next prime is 1681891. The reversal of 1681882 is 2881861.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1234321 + 447561 = 1111^2 + 669^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 420469 + ... + 420472.

2^1681882 is an apocalyptic number.

1681882 is a deficient number, since it is larger than the sum of its proper divisors (840944).

1681882 is an equidigital number, since it uses as much as digits as its factorization.

1681882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 840943.

The product of its digits is 6144, while the sum is 34.

The square root of 1681882 is about 1296.8739337345. The cubic root of 1681882 is about 118.9228132082.

It can be divided in two parts, 16818 and 82, that added together give a square (16900 = 130²).

The spelling of 1681882 in words is "one million, six hundred eighty-one thousand, eight hundred eighty-two".