2191683 has 8 divisors (see below), whose sum is σ = 3147088. Its totient is φ = 1348704.

The previous prime is 2191633. The next prime is 2191687. The reversal of 2191683 is 3861912.

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

It is not a de Polignac number, because 2191683 - 2⁶ = 2191619 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2191683.

It is not an unprimeable number, because it can be changed into a prime (2191687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28060 + ... + 28137.

It is an arithmetic number, because the mean of its divisors is an integer number (393386).

2^2191683 is an apocalyptic number.

2191683 is a deficient number, since it is larger than the sum of its proper divisors (955405).

2191683 is a wasteful number, since it uses less digits than its factorization.

2191683 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56213.

The product of its digits is 2592, while the sum is 30.

The square root of 2191683 is about 1480.4333824931. The cubic root of 2191683 is about 129.8950434905.

The spelling of 2191683 in words is "two million, one hundred ninety-one thousand, six hundred eighty-three".