2161683 has 12 divisors (see below), whose sum is σ = 3142048. Its totient is φ = 1432080.

The previous prime is 2161639. The next prime is 2161697. The reversal of 2161683 is 3861612.

It is not a de Polignac number, because 2161683 - 2⁸ = 2161427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2161613) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 966 + ... + 2292.

2^2161683 is an apocalyptic number.

2161683 is a deficient number, since it is larger than the sum of its proper divisors (980365).

2161683 is a wasteful number, since it uses less digits than its factorization.

2161683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1514 (or 1511 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 2161683 is about 1470.2663024092. The cubic root of 2161683 is about 129.2996459599.

The spelling of 2161683 in words is "two million, one hundred sixty-one thousand, six hundred eighty-three".