1444165313 has 2 divisors, whose sum is σ = 1444165314. Its totient is φ = 1444165312.

The previous prime is 1444165297. The next prime is 1444165321. The reversal of 1444165313 is 3135614441.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1316746369 + 127418944 = 36287^2 + 11288^2 .

It is a cyclic number.

It is not a de Polignac number, because 1444165313 - 2⁴ = 1444165297 is a prime.

It is a super-2 number, since 2×1444165313² = 4171226902544775938, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1444165313.

It is not a weakly prime, because it can be changed into another prime (1444165343) 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, 722082656 + 722082657.

It is an arithmetic number, because the mean of its divisors is an integer number (722082657).

Almost surely, 2^1444165313 is an apocalyptic number.

It is an amenable number.

1444165313 is a deficient number, since it is larger than the sum of its proper divisors (1).

1444165313 is an equidigital number, since it uses as much as digits as its factorization.

1444165313 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 17280, while the sum is 32.

The square root of 1444165313 is about 38002.1751088013. The cubic root of 1444165313 is about 1130.3309947435.

Adding to 1444165313 its reverse (3135614441), we get a palindrome (4579779754).

The spelling of 1444165313 in words is "one billion, four hundred forty-four million, one hundred sixty-five thousand, three hundred thirteen".