1680163 has 4 divisors (see below), whose sum is σ = 1687608. Its totient is φ = 1672720.

The previous prime is 1680149. The next prime is 1680167. The reversal of 1680163 is 3610861.

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

It is a cyclic number.

It is not a de Polignac number, because 1680163 - 2⁵ = 1680131 is a prime.

It is a d-powerful number, because it can be written as 1 + 6 + 8³ + 0 + 1 + 6⁸ + 3³ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1680167) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3373 + ... + 3838.

It is an arithmetic number, because the mean of its divisors is an integer number (421902).

2^1680163 is an apocalyptic number.

1680163 is a deficient number, since it is larger than the sum of its proper divisors (7445).

1680163 is an equidigital number, since it uses as much as digits as its factorization.

1680163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7444.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1680163 is about 1296.2110167716. The cubic root of 1680163 is about 118.8822836106.

The spelling of 1680163 in words is "one million, six hundred eighty thousand, one hundred sixty-three".