2190173 has 2 divisors, whose sum is σ = 2190174. Its totient is φ = 2190172.

The previous prime is 2190169. The next prime is 2190191. The reversal of 2190173 is 3710912.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1592644 + 597529 = 1262^2 + 773^2 .

It is a cyclic number.

It is not a de Polignac number, because 2190173 - 2² = 2190169 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2190103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1095086 + 1095087.

It is an arithmetic number, because the mean of its divisors is an integer number (1095087).

2^2190173 is an apocalyptic number.

It is an amenable number.

2190173 is a deficient number, since it is larger than the sum of its proper divisors (1).

2190173 is an equidigital number, since it uses as much as digits as its factorization.

2190173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 2190173 is about 1479.9233088238. The cubic root of 2190173 is about 129.8652054500.

The spelling of 2190173 in words is "two million, one hundred ninety thousand, one hundred seventy-three".