1444723673 has 4 divisors (see below), whose sum is σ = 1451032740. Its totient is φ = 1438414608.

The previous prime is 1444723669. The next prime is 1444723703. The reversal of 1444723673 is 3763274441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3763274441 = 1831 ⋅2055311.

It can be written as a sum of positive squares in 2 ways, for example, as 941753344 + 502970329 = 30688^2 + 22427^2 .

It is a cyclic number.

It is not a de Polignac number, because 1444723673 - 2² = 1444723669 is a prime.

It is a super-2 number, since 2×1444723673² = 4174452982653221858, which contains 22 as substring.

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 1444723673.

It is not an unprimeable number, because it can be changed into a prime (1444123673) 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, 3154190 + ... + 3154647.

It is an arithmetic number, because the mean of its divisors is an integer number (362758185).

Almost surely, 2^1444723673 is an apocalyptic number.

It is an amenable number.

1444723673 is a deficient number, since it is larger than the sum of its proper divisors (6309067).

1444723673 is an equidigital number, since it uses as much as digits as its factorization.

1444723673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6309066.

The product of its digits is 338688, while the sum is 41.

The square root of 1444723673 is about 38009.5208204471. The cubic root of 1444723673 is about 1130.4766498813.

The spelling of 1444723673 in words is "one billion, four hundred forty-four million, seven hundred twenty-three thousand, six hundred seventy-three".