1444045513 has 4 divisors (see below), whose sum is σ = 1447262100. Its totient is φ = 1440828928.

The previous prime is 1444045507. The next prime is 1444045529. The reversal of 1444045513 is 3155404441.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 528862009 + 915183504 = 22997^2 + 30252^2 .

It is a cyclic number.

It is not a de Polignac number, because 1444045513 - 2⁵ = 1444045481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1444045553) 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 in 3 ways as a sum of consecutive naturals, for example, 1607620 + ... + 1608517.

It is an arithmetic number, because the mean of its divisors is an integer number (361815525).

Almost surely, 2^1444045513 is an apocalyptic number.

It is an amenable number.

1444045513 is a deficient number, since it is larger than the sum of its proper divisors (3216587).

1444045513 is an equidigital number, since it uses as much as digits as its factorization.

1444045513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3216586.

The product of its (nonzero) digits is 19200, while the sum is 31.

The square root of 1444045513 is about 38000.5988505444. The cubic root of 1444045513 is about 1130.2997385346.

Adding to 1444045513 its reverse (3155404441), we get a palindrome (4599449954).

The spelling of 1444045513 in words is "one billion, four hundred forty-four million, forty-five thousand, five hundred thirteen".