1944109945 has 8 divisors (see below), whose sum is σ = 2336042880. Its totient is φ = 1553214000.

The previous prime is 1944109933. The next prime is 1944109949. The reversal of 1944109945 is 5499014491.

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

It is not a de Polignac number, because 1944109945 - 2¹¹ = 1944107897 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1944109895 and 1944109904.

It is not an unprimeable number, because it can be changed into a prime (1944109949) 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 7 ways as a sum of consecutive naturals, for example, 255115 + ... + 262624.

It is an arithmetic number, because the mean of its divisors is an integer number (292005360).

Almost surely, 2^1944109945 is an apocalyptic number.

It is an amenable number.

1944109945 is a deficient number, since it is larger than the sum of its proper divisors (391932935).

1944109945 is an equidigital number, since it uses as much as digits as its factorization.

1944109945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518495.

The product of its (nonzero) digits is 233280, while the sum is 46.

The square root of 1944109945 is about 44092.0621540885. The cubic root of 1944109945 is about 1248.0738216608.

The spelling of 1944109945 in words is "one billion, nine hundred forty-four million, one hundred nine thousand, nine hundred forty-five".