1944430344491 has 8 divisors (see below), whose sum is σ = 1989764449200. Its totient is φ = 1899101457792.

The previous prime is 1944430344443. The next prime is 1944430344511.

1944430344491 is nontrivially palindromic in base 10.

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 1944430344491 - 2¹⁸ = 1944430082347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1944430344091) 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, 545450 + ... + 2046063.

It is an arithmetic number, because the mean of its divisors is an integer number (248720556150).

Almost surely, 2^{1944430344491} is an apocalyptic number.

1944430344491 is a deficient number, since it is larger than the sum of its proper divisors (45334104709).

1944430344491 is a wasteful number, since it uses less digits than its factorization.

1944430344491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2609005.

The product of its (nonzero) digits is 2985984, while the sum is 50.

The spelling of 1944430344491 in words is "one trillion, nine hundred forty-four billion, four hundred thirty million, three hundred forty-four thousand, four hundred ninety-one".