1630273 has 2 divisors, whose sum is σ = 1630274. Its totient is φ = 1630272.

The previous prime is 1630261. The next prime is 1630303. The reversal of 1630273 is 3720361.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1034289 + 595984 = 1017^2 + 772^2 .

It is an emirp because it is prime and its reverse (3720361) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1630273 - 2¹³ = 1622081 is a prime.

It is not a weakly prime, because it can be changed into another prime (1630243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 815136 + 815137.

It is an arithmetic number, because the mean of its divisors is an integer number (815137).

2^1630273 is an apocalyptic number.

It is an amenable number.

1630273 is a deficient number, since it is larger than the sum of its proper divisors (1).

1630273 is an equidigital number, since it uses as much as digits as its factorization.

1630273 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 22.

The square root of 1630273 is about 1276.8214440555. The cubic root of 1630273 is about 117.6937620897.

The spelling of 1630273 in words is "one million, six hundred thirty thousand, two hundred seventy-three".