1730149 has 2 divisors, whose sum is σ = 1730150. Its totient is φ = 1730148.

The previous prime is 1730147. The next prime is 1730153. The reversal of 1730149 is 9410371.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1664100 + 66049 = 1290^2 + 257^2 .

It is a cyclic number.

It is not a de Polignac number, because 1730149 - 2¹ = 1730147 is a prime.

Together with 1730147, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1730147) 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, 865074 + 865075.

It is an arithmetic number, because the mean of its divisors is an integer number (865075).

2^1730149 is an apocalyptic number.

It is an amenable number.

1730149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1730149 is an equidigital number, since it uses as much as digits as its factorization.

1730149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 1730149 is about 1315.3512838782. The cubic root of 1730149 is about 120.0497247629.

The spelling of 1730149 in words is "one million, seven hundred thirty thousand, one hundred forty-nine".