1444772743 has 4 divisors (see below), whose sum is σ = 1458275400. Its totient is φ = 1431270088.

The previous prime is 1444772741. The next prime is 1444772759. The reversal of 1444772743 is 3472774441.

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

It is a cyclic number.

It is not a de Polignac number, because 1444772743 - 2¹ = 1444772741 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1444772743.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1444772741) 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, 6751168 + ... + 6751381.

It is an arithmetic number, because the mean of its divisors is an integer number (364568850).

Almost surely, 2^1444772743 is an apocalyptic number.

1444772743 is a deficient number, since it is larger than the sum of its proper divisors (13502657).

1444772743 is a wasteful number, since it uses less digits than its factorization.

1444772743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13502656.

The product of its digits is 526848, while the sum is 43.

The square root of 1444772743 is about 38010.1663111331. The cubic root of 1444772743 is about 1130.4894486059.

The spelling of 1444772743 in words is "one billion, four hundred forty-four million, seven hundred seventy-two thousand, seven hundred forty-three".