1444332313 has 4 divisors (see below), whose sum is σ = 1444437540. Its totient is φ = 1444227088.

The previous prime is 1444332301. The next prime is 1444332341. The reversal of 1444332313 is 3132334441.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 1293337369 + 150994944 = 35963^2 + 12288^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1444332313 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1444332343) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28270 + ... + 60727.

It is an arithmetic number, because the mean of its divisors is an integer number (361109385).

Almost surely, 2^1444332313 is an apocalyptic number.

It is an amenable number.

1444332313 is a deficient number, since it is larger than the sum of its proper divisors (105227).

1444332313 is an equidigital number, since it uses as much as digits as its factorization.

1444332313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105226.

The product of its digits is 10368, while the sum is 28.

The square root of 1444332313 is about 38004.3722879355. The cubic root of 1444332313 is about 1130.3745627013.

Adding to 1444332313 its reverse (3132334441), we get a palindrome (4576666754).

The spelling of 1444332313 in words is "one billion, four hundred forty-four million, three hundred thirty-two thousand, three hundred thirteen".