2187193 has 2 divisors, whose sum is σ = 2187194. Its totient is φ = 2187192.

The previous prime is 2187161. The next prime is 2187197. The reversal of 2187193 is 3917812.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1841449 + 345744 = 1357^2 + 588^2 .

It is a cyclic number.

It is not a de Polignac number, because 2187193 - 2⁵ = 2187161 is a prime.

2187193 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2187197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1093596 + 1093597.

It is an arithmetic number, because the mean of its divisors is an integer number (1093597).

2^2187193 is an apocalyptic number.

It is an amenable number.

2187193 is a deficient number, since it is larger than the sum of its proper divisors (1).

2187193 is an equidigital number, since it uses as much as digits as its factorization.

2187193 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3024, while the sum is 31.

The square root of 2187193 is about 1478.9161571908. The cubic root of 2187193 is about 129.8062795167.

The spelling of 2187193 in words is "two million, one hundred eighty-seven thousand, one hundred ninety-three".