1818317 has 2 divisors, whose sum is σ = 1818318. Its totient is φ = 1818316.

The previous prime is 1818307. The next prime is 1818331. The reversal of 1818317 is 7138181.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1094116 + 724201 = 1046^2 + 851^2 .

It is a cyclic number.

It is not a de Polignac number, because 1818317 - 2¹⁶ = 1752781 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1818317.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1818307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 909158 + 909159.

It is an arithmetic number, because the mean of its divisors is an integer number (909159).

2^1818317 is an apocalyptic number.

It is an amenable number.

1818317 is a deficient number, since it is larger than the sum of its proper divisors (1).

1818317 is an equidigital number, since it uses as much as digits as its factorization.

1818317 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1344, while the sum is 29.

The square root of 1818317 is about 1348.4498507546. The cubic root of 1818317 is about 122.0552692335.

The spelling of 1818317 in words is "one million, eight hundred eighteen thousand, three hundred seventeen".