2019973 has 2 divisors, whose sum is σ = 2019974. Its totient is φ = 2019972.

The previous prime is 2019967. The next prime is 2019977. The reversal of 2019973 is 3799102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1940449 + 79524 = 1393^2 + 282^2 .

It is a cyclic number.

It is not a de Polignac number, because 2019973 - 2⁹ = 2019461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2019977) 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, 1009986 + 1009987.

It is an arithmetic number, because the mean of its divisors is an integer number (1009987).

2^2019973 is an apocalyptic number.

It is an amenable number.

2019973 is a deficient number, since it is larger than the sum of its proper divisors (1).

2019973 is an equidigital number, since it uses as much as digits as its factorization.

2019973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3402, while the sum is 31.

The square root of 2019973 is about 1421.2575417566. The cubic root of 2019973 is about 126.4101232679.

It can be divided in two parts, 2019 and 973, that added together give a palindrome (2992).

The spelling of 2019973 in words is "two million, nineteen thousand, nine hundred seventy-three".