1944345329 has 4 divisors (see below), whose sum is σ = 1944546276. Its totient is φ = 1944144384.

The previous prime is 1944345311. The next prime is 1944345331. The reversal of 1944345329 is 9235434491.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9235434491 = 4723 ⋅1955417.

It can be written as a sum of positive squares in 2 ways, for example, as 1527246400 + 417098929 = 39080^2 + 20423^2 .

It is a cyclic number.

It is not a de Polignac number, because 1944345329 - 2²⁰ = 1943296753 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1944345329.

It is not an unprimeable number, because it can be changed into a prime (1944345229) 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, 85184 + ... + 105569.

It is an arithmetic number, because the mean of its divisors is an integer number (486136569).

Almost surely, 2^1944345329 is an apocalyptic number.

It is an amenable number.

1944345329 is a deficient number, since it is larger than the sum of its proper divisors (200947).

1944345329 is a wasteful number, since it uses less digits than its factorization.

1944345329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200946.

The product of its digits is 466560, while the sum is 44.

The square root of 1944345329 is about 44094.7313065858. The cubic root of 1944345329 is about 1248.1241899975.

The spelling of 1944345329 in words is "one billion, nine hundred forty-four million, three hundred forty-five thousand, three hundred twenty-nine".