1065440273 has 2 divisors, whose sum is σ = 1065440274. Its totient is φ = 1065440272.

The previous prime is 1065440267. The next prime is 1065440279. The reversal of 1065440273 is 3720445601.

It is a balanced prime because it is at equal distance from previous prime (1065440267) and next prime (1065440279).

It can be written as a sum of positive squares in only one way, i.e., 729378049 + 336062224 = 27007^2 + 18332^2 .

It is an emirp because it is prime and its reverse (3720445601) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1065440273 - 2¹⁴ = 1065423889 is a prime.

It is a super-2 number, since 2×1065440273² = 2270325950660629058, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1065440279) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 532720136 + 532720137.

It is an arithmetic number, because the mean of its divisors is an integer number (532720137).

Almost surely, 2^1065440273 is an apocalyptic number.

It is an amenable number.

1065440273 is a deficient number, since it is larger than the sum of its proper divisors (1).

1065440273 is an equidigital number, since it uses as much as digits as its factorization.

1065440273 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 1065440273 is about 32641.0825954042. The cubic root of 1065440273 is about 1021.3541775913.

Adding to 1065440273 its reverse (3720445601), we get a palindrome (4785885874).

The spelling of 1065440273 in words is "one billion, sixty-five million, four hundred forty thousand, two hundred seventy-three".