1681792 has 32 divisors (see below), whose sum is σ = 3831120. Its totient is φ = 720384.

The previous prime is 1681787. The next prime is 1681807. The reversal of 1681792 is 2971861.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

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, 43 + ... + 1834.

2^1681792 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1681792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1915560).

1681792 is an abundant number, since it is smaller than the sum of its proper divisors (2149328).

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

1681792 is an equidigital number, since it uses as much as digits as its factorization.

1681792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1898 (or 1886 counting only the distinct ones).

The product of its digits is 6048, while the sum is 34.

The square root of 1681792 is about 1296.8392344466. The cubic root of 1681792 is about 118.9206919250.

The spelling of 1681792 in words is "one million, six hundred eighty-one thousand, seven hundred ninety-two".