1798129 has 2 divisors, whose sum is σ = 1798130. Its totient is φ = 1798128.

The previous prime is 1798127. The next prime is 1798133. The reversal of 1798129 is 9218971.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1677025 + 121104 = 1295^2 + 348^2 .

It is a cyclic number.

It is not a de Polignac number, because 1798129 - 2¹ = 1798127 is a prime.

Together with 1798127, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1798123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 899064 + 899065.

It is an arithmetic number, because the mean of its divisors is an integer number (899065).

2^1798129 is an apocalyptic number.

It is an amenable number.

1798129 is a deficient number, since it is larger than the sum of its proper divisors (1).

1798129 is an equidigital number, since it uses as much as digits as its factorization.

1798129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 37.

The square root of 1798129 is about 1340.9433246786. The cubic root of 1798129 is about 121.6018778926.

The spelling of 1798129 in words is "one million, seven hundred ninety-eight thousand, one hundred twenty-nine".