2185973 has 2 divisors, whose sum is σ = 2185974. Its totient is φ = 2185972.

The previous prime is 2185949. The next prime is 2185987. The reversal of 2185973 is 3795812.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2007889 + 178084 = 1417^2 + 422^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2185973 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2185913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1092986 + 1092987.

It is an arithmetic number, because the mean of its divisors is an integer number (1092987).

2^2185973 is an apocalyptic number.

It is an amenable number.

2185973 is a deficient number, since it is larger than the sum of its proper divisors (1).

2185973 is an equidigital number, since it uses as much as digits as its factorization.

2185973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15120, while the sum is 35.

The square root of 2185973 is about 1478.5036354369. The cubic root of 2185973 is about 129.7821400352.

The spelling of 2185973 in words is "two million, one hundred eighty-five thousand, nine hundred seventy-three".