1944549 has 6 divisors (see below), whose sum is σ = 2808806. Its totient is φ = 1296360.

The previous prime is 1944539. The next prime is 1944557. The reversal of 1944549 is 9454491.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1512900 + 431649 = 1230^2 + 657^2 .

It is not a de Polignac number, because 1944549 - 2¹² = 1940453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1944529) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 108022 + ... + 108039.

2^1944549 is an apocalyptic number.

It is an amenable number.

1944549 is a deficient number, since it is larger than the sum of its proper divisors (864257).

1944549 is a wasteful number, since it uses less digits than its factorization.

1944549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216067 (or 216064 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 1944549 is about 1394.4708673902. The cubic root of 1944549 is about 124.8167768989.

The spelling of 1944549 in words is "one million, nine hundred forty-four thousand, five hundred forty-nine".