2180973 has 4 divisors (see below), whose sum is σ = 2907968. Its totient is φ = 1453980.

The previous prime is 2180963. The next prime is 2180993. The reversal of 2180973 is 3790812.

It is a happy number.

2180973 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2180973 - 2⁴ = 2180957 is a prime.

It is a D-number.

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 2180973.

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 3 ways as a sum of consecutive naturals, for example, 363493 + ... + 363498.

It is an arithmetic number, because the mean of its divisors is an integer number (726992).

2^2180973 is an apocalyptic number.

It is an amenable number.

2180973 is a deficient number, since it is larger than the sum of its proper divisors (726995).

2180973 is an equidigital number, since it uses as much as digits as its factorization.

2180973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726994.

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 2180973 is about 1476.8117686422. The cubic root of 2180973 is about 129.6831137918.

The spelling of 2180973 in words is "two million, one hundred eighty thousand, nine hundred seventy-three".