1798289 has 2 divisors, whose sum is σ = 1798290. Its totient is φ = 1798288.

The previous prime is 1798273. The next prime is 1798309. The reversal of 1798289 is 9828971.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1210000 + 588289 = 1100^2 + 767^2 .

It is a cyclic number.

It is not a de Polignac number, because 1798289 - 2⁴ = 1798273 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1798189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 899144 + 899145.

It is an arithmetic number, because the mean of its divisors is an integer number (899145).

2^1798289 is an apocalyptic number.

It is an amenable number.

1798289 is a deficient number, since it is larger than the sum of its proper divisors (1).

1798289 is an equidigital number, since it uses as much as digits as its factorization.

1798289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 44.

The square root of 1798289 is about 1341.0029828453. The cubic root of 1798289 is about 121.6054845532.

The spelling of 1798289 in words is "one million, seven hundred ninety-eight thousand, two hundred eighty-nine".