1818937 has 2 divisors, whose sum is σ = 1818938. Its totient is φ = 1818936.

The previous prime is 1818931. The next prime is 1818977. The reversal of 1818937 is 7398181.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 942841 + 876096 = 971^2 + 936^2 .

It is a cyclic number.

It is not a de Polignac number, because 1818937 - 2¹⁹ = 1294649 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 1818896 and 1818905.

It is not a weakly prime, because it can be changed into another prime (1818931) 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, 909468 + 909469.

It is an arithmetic number, because the mean of its divisors is an integer number (909469).

2^1818937 is an apocalyptic number.

It is an amenable number.

1818937 is a deficient number, since it is larger than the sum of its proper divisors (1).

1818937 is an equidigital number, since it uses as much as digits as its factorization.

1818937 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 12096, while the sum is 37.

The square root of 1818937 is about 1348.6797247679. The cubic root of 1818937 is about 122.0691402413.

The spelling of 1818937 in words is "one million, eight hundred eighteen thousand, nine hundred thirty-seven".