1444455641 has 8 divisors (see below), whose sum is σ = 1483488000. Its totient is φ = 1405908400.

The previous prime is 1444455589. The next prime is 1444455647. The reversal of 1444455641 is 1465544441.

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 1444455641 - 2¹⁰ = 1444454617 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1444455595 and 1444455604.

It is not an unprimeable number, because it can be changed into a prime (1444455647) 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, 115241 + ... + 127158.

It is an arithmetic number, because the mean of its divisors is an integer number (185436000).

Almost surely, 2^1444455641 is an apocalyptic number.

It is an amenable number.

1444455641 is a deficient number, since it is larger than the sum of its proper divisors (39032359).

1444455641 is a wasteful number, since it uses less digits than its factorization.

1444455641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242559.

The product of its digits is 153600, while the sum is 38.

The square root of 1444455641 is about 38005.9948034517. The cubic root of 1444455641 is about 1130.4067350911.

The spelling of 1444455641 in words is "one billion, four hundred forty-four million, four hundred fifty-five thousand, six hundred forty-one".