1797109 has 2 divisors, whose sum is σ = 1797110. Its totient is φ = 1797108.

The previous prime is 1797097. The next prime is 1797161. The reversal of 1797109 is 9017971.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1782225 + 14884 = 1335^2 + 122^2 .

It is a cyclic number.

It is not a de Polignac number, because 1797109 - 2¹¹ = 1795061 is a prime.

1797109 is a lucky number.

It is a plaindrome in base 14.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1797209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 898554 + 898555.

It is an arithmetic number, because the mean of its divisors is an integer number (898555).

2^1797109 is an apocalyptic number.

It is an amenable number.

1797109 is a deficient number, since it is larger than the sum of its proper divisors (1).

1797109 is an equidigital number, since it uses as much as digits as its factorization.

1797109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3969, while the sum is 34.

The square root of 1797109 is about 1340.5629414541. The cubic root of 1797109 is about 121.5788803998.

The spelling of 1797109 in words is "one million, seven hundred ninety-seven thousand, one hundred nine".