1065440213 has 8 divisors (see below), whose sum is σ = 1093634616. Its totient is φ = 1037592000.

The previous prime is 1065440191. The next prime is 1065440249. The reversal of 1065440213 is 3120445601.

It can be written as a sum of positive squares in 4 ways, for example, as 143832049 + 921608164 = 11993^2 + 30358^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1065440213 - 2⁶ = 1065440149 is a prime.

It is a super-2 number, since 2×1065440213² = 2270325694954970738, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1065440273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80306 + ... + 92627.

It is an arithmetic number, because the mean of its divisors is an integer number (136704327).

Almost surely, 2^1065440213 is an apocalyptic number.

It is an amenable number.

1065440213 is a deficient number, since it is larger than the sum of its proper divisors (28194403).

1065440213 is a wasteful number, since it uses less digits than its factorization.

1065440213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173095.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 1065440213 is about 32641.0816763170. The cubic root of 1065440213 is about 1021.3541584189.

Adding to 1065440213 its reverse (3120445601), we get a palindrome (4185885814).

The spelling of 1065440213 in words is "one billion, sixty-five million, four hundred forty thousand, two hundred thirteen".