1444743213 has 4 divisors (see below), whose sum is σ = 1926324288. Its totient is φ = 963162140.

The previous prime is 1444743191. The next prime is 1444743217. The reversal of 1444743213 is 3123474441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1444743213 - 2²⁸ = 1176307757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1444743217) 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, 240790533 + ... + 240790538.

It is an arithmetic number, because the mean of its divisors is an integer number (481581072).

Almost surely, 2^1444743213 is an apocalyptic number.

It is an amenable number.

1444743213 is a deficient number, since it is larger than the sum of its proper divisors (481581075).

1444743213 is an equidigital number, since it uses as much as digits as its factorization.

1444743213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 481581074.

The product of its digits is 32256, while the sum is 33.

The square root of 1444743213 is about 38009.7778604401. Note that the first 3 decimals coincide. The cubic root of 1444743213 is about 1130.4817464532.

The spelling of 1444743213 in words is "one billion, four hundred forty-four million, seven hundred forty-three thousand, two hundred thirteen".