1944219425 has 12 divisors (see below), whose sum is σ = 2433366576. Its totient is φ = 1540837200.

The previous prime is 1944219413. The next prime is 1944219443. The reversal of 1944219425 is 5249124491.

It is not a de Polignac number, because 1944219425 - 2²² = 1940025121 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 360731 + ... + 366080.

It is an arithmetic number, because the mean of its divisors is an integer number (202780548).

Almost surely, 2^1944219425 is an apocalyptic number.

It is an amenable number.

1944219425 is a deficient number, since it is larger than the sum of its proper divisors (489147151).

1944219425 is a wasteful number, since it uses less digits than its factorization.

1944219425 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 726928 (or 726923 counting only the distinct ones).

The product of its digits is 103680, while the sum is 41.

The square root of 1944219425 is about 44093.3036299164. The cubic root of 1944219425 is about 1248.0972491008.

The spelling of 1944219425 in words is "one billion, nine hundred forty-four million, two hundred nineteen thousand, four hundred twenty-five".