1806373 has 2 divisors, whose sum is σ = 1806374. Its totient is φ = 1806372.

The previous prime is 1806361. The next prime is 1806379. The reversal of 1806373 is 3736081.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1790244 + 16129 = 1338^2 + 127^2 .

It is an emirp because it is prime and its reverse (3736081) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1806373 - 2⁵ = 1806341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1806379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 903186 + 903187.

It is an arithmetic number, because the mean of its divisors is an integer number (903187).

2^1806373 is an apocalyptic number.

It is an amenable number.

1806373 is a deficient number, since it is larger than the sum of its proper divisors (1).

1806373 is an equidigital number, since it uses as much as digits as its factorization.

1806373 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 1806373 is about 1344.0137648105. The cubic root of 1806373 is about 121.7874333074.

The spelling of 1806373 in words is "one million, eight hundred six thousand, three hundred seventy-three".