1944719045 has 8 divisors (see below), whose sum is σ = 2333903640. Its totient is φ = 1555614720.

The previous prime is 1944719041. The next prime is 1944719059. The reversal of 1944719045 is 5409174491.

It can be written as a sum of positive squares in 4 ways, for example, as 122965921 + 1821753124 = 11089^2 + 42682^2 .

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

It is not a de Polignac number, because 1944719045 - 2² = 1944719041 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1944718987 and 1944719005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1944719041) 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, 69965 + ... + 93725.

It is an arithmetic number, because the mean of its divisors is an integer number (291737955).

Almost surely, 2^1944719045 is an apocalyptic number.

It is an amenable number.

1944719045 is a deficient number, since it is larger than the sum of its proper divisors (389184595).

1944719045 is a wasteful number, since it uses less digits than its factorization.

1944719045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40135.

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 1944719045 is about 44098.9687521148. The cubic root of 1944719045 is about 1248.2041507760.

The spelling of 1944719045 in words is "one billion, nine hundred forty-four million, seven hundred nineteen thousand, forty-five".