1444618673 has 8 divisors (see below), whose sum is σ = 1582341480. Its totient is φ = 1312756480.

The previous prime is 1444618667. The next prime is 1444618687. The reversal of 1444618673 is 3768164441.

It can be written as a sum of positive squares in 4 ways, for example, as 140469904 + 1304148769 = 11852^2 + 36113^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1444618673 - 2²⁰ = 1443570097 is a prime.

It is a super-2 number, since 2×1444618673² = 4173846220760561858, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1444618603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1464638 + ... + 1465623.

It is an arithmetic number, because the mean of its divisors is an integer number (197792685).

Almost surely, 2^1444618673 is an apocalyptic number.

It is an amenable number.

1444618673 is a deficient number, since it is larger than the sum of its proper divisors (137722807).

1444618673 is a wasteful number, since it uses less digits than its factorization.

1444618673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2930307.

The product of its digits is 387072, while the sum is 44.

The square root of 1444618673 is about 38008.1395624674. The cubic root of 1444618673 is about 1130.4492621932.

The spelling of 1444618673 in words is "one billion, four hundred forty-four million, six hundred eighteen thousand, six hundred seventy-three".