1806113 has 2 divisors, whose sum is σ = 1806114. Its totient is φ = 1806112.

The previous prime is 1806107. The next prime is 1806137. The reversal of 1806113 is 3116081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1682209 + 123904 = 1297^2 + 352^2 .

It is a cyclic number.

It is not a de Polignac number, because 1806113 - 2⁸ = 1805857 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (1806143) 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, 903056 + 903057.

It is an arithmetic number, because the mean of its divisors is an integer number (903057).

2^1806113 is an apocalyptic number.

It is an amenable number.

1806113 is a deficient number, since it is larger than the sum of its proper divisors (1).

1806113 is an equidigital number, since it uses as much as digits as its factorization.

1806113 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 1806113 is about 1343.9170361298. The cubic root of 1806113 is about 121.7815898756.

The spelling of 1806113 in words is "one million, eight hundred six thousand, one hundred thirteen".