1944444444443 has 4 divisors (see below), whose sum is σ = 1966292134920. Its totient is φ = 1922596753968.

The previous prime is 1944444444407. The next prime is 1944444444451. The reversal of 1944444444443 is 3444444444491.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1944444444443 - 2¹⁶ = 1944444378907 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1944444444143) 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, 10923845105 + ... + 10923845282.

It is an arithmetic number, because the mean of its divisors is an integer number (491573033730).

Almost surely, 2^{1944444444443} is an apocalyptic number.

1944444444443 is a deficient number, since it is larger than the sum of its proper divisors (21847690477).

1944444444443 is an equidigital number, since it uses as much as digits as its factorization.

1944444444443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21847690476.

The product of its digits is 28311552, while the sum is 53.

The spelling of 1944444444443 in words is "one trillion, nine hundred forty-four billion, four hundred forty-four million, four hundred forty-four thousand, four hundred forty-three".