2180923 has 2 divisors, whose sum is σ = 2180924. Its totient is φ = 2180922.

The previous prime is 2180921. The next prime is 2180957. The reversal of 2180923 is 3290812.

2180923 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2180923 - 2¹ = 2180921 is a prime.

Together with 2180921, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2180921) 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 as a sum of consecutive naturals, namely, 1090461 + 1090462.

It is an arithmetic number, because the mean of its divisors is an integer number (1090462).

2^2180923 is an apocalyptic number.

2180923 is a deficient number, since it is larger than the sum of its proper divisors (1).

2180923 is an equidigital number, since it uses as much as digits as its factorization.

2180923 is an odious number, because the sum of its binary digits is odd.

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

The square root of 2180923 is about 1476.7948401860. The cubic root of 2180923 is about 129.6821227654.

The spelling of 2180923 in words is "two million, one hundred eighty thousand, nine hundred twenty-three".