1444157573 has 8 divisors (see below), whose sum is σ = 1519279200. Its totient is φ = 1370724208.

The previous prime is 1444157569. The next prime is 1444157591. The reversal of 1444157573 is 3757514441.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1444157573 - 2² = 1444157569 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 1444157573.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1444157873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 420311 + ... + 423732.

It is an arithmetic number, because the mean of its divisors is an integer number (189909900).

Almost surely, 2^1444157573 is an apocalyptic number.

It is an amenable number.

1444157573 is a deficient number, since it is larger than the sum of its proper divisors (75121627).

1444157573 is an equidigital number, since it uses as much as digits as its factorization.

1444157573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 844131.

The product of its digits is 235200, while the sum is 41.

The square root of 1444157573 is about 38002.0732723887. The cubic root of 1444157573 is about 1130.3289754046.

The spelling of 1444157573 in words is "one billion, four hundred forty-four million, one hundred fifty-seven thousand, five hundred seventy-three".