1944544446 has 48 divisors (see below), whose sum is σ = 4588300080. Its totient is φ = 591592320.

The previous prime is 1944544423. The next prime is 1944544457. The reversal of 1944544446 is 6444454491.

It is a happy number.

1944544446 is a `hidden beast` number, since 194 + 454 + 4 + 4 + 4 + 6 = 666.

It is a super-5 number, since 5×1944544446⁵ (a number of 48 digits) contains 55555 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25860 + ... + 67511.

It is an arithmetic number, because the mean of its divisors is an integer number (95589585).

Almost surely, 2^1944544446 is an apocalyptic number.

1944544446 is an abundant number, since it is smaller than the sum of its proper divisors (2643755634).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1944544446 is a wasteful number, since it uses less digits than its factorization.

1944544446 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93481 (or 93478 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 45.

The square root of 1944544446 is about 44096.9890808885. The cubic root of 1944544446 is about 1248.1667946140.

The spelling of 1944544446 in words is "one billion, nine hundred forty-four million, five hundred forty-four thousand, four hundred forty-six".