1444789021893 has 32 divisors (see below), whose sum is σ = 2205854859264. Its totient is φ = 823992486912.

The previous prime is 1444789021877. The next prime is 1444789021903. The reversal of 1444789021893 is 3981209874441.

It is not a de Polignac number, because 1444789021893 - 2⁴ = 1444789021877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1444789021693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 80047996 + ... + 80066042.

It is an arithmetic number, because the mean of its divisors is an integer number (68932964352).

Almost surely, 2^{1444789021893} is an apocalyptic number.

It is an amenable number.

1444789021893 is a deficient number, since it is larger than the sum of its proper divisors (761065837371).

1444789021893 is a wasteful number, since it uses less digits than its factorization.

1444789021893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25241.

The product of its (nonzero) digits is 13934592, while the sum is 60.

The spelling of 1444789021893 in words is "one trillion, four hundred forty-four billion, seven hundred eighty-nine million, twenty-one thousand, eight hundred ninety-three".