2180943 has 12 divisors (see below), whose sum is σ = 3252288. Its totient is φ = 1406880.

The previous prime is 2180923. The next prime is 2180957. The reversal of 2180943 is 3490812.

2180943 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 2180943 - 2⁵ = 2180911 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2180923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3630 + ... + 4187.

It is an arithmetic number, because the mean of its divisors is an integer number (271024).

2^2180943 is an apocalyptic number.

2180943 is a deficient number, since it is larger than the sum of its proper divisors (1071345).

2180943 is a wasteful number, since it uses less digits than its factorization.

2180943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7854 (or 7851 counting only the distinct ones).

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

The square root of 2180943 is about 1476.8016115918. The cubic root of 2180943 is about 129.6825191777.

Subtracting from 2180943 its sum of digits (27), we obtain a triangular number (2180916 = T₂₀₈₈).

The spelling of 2180943 in words is "two million, one hundred eighty thousand, nine hundred forty-three".