1944663 has 12 divisors (see below), whose sum is σ = 3016440. Its totient is φ = 1111152.

The previous prime is 1944659. The next prime is 1944667. The reversal of 1944663 is 3664491.

It is an interprime number because it is at equal distance from previous prime (1944659) and next prime (1944667).

It is not a de Polignac number, because 1944663 - 2² = 1944659 is a prime.

1944663 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1944667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6468 + ... + 6761.

It is an arithmetic number, because the mean of its divisors is an integer number (251370).

2^1944663 is an apocalyptic number.

1944663 is a deficient number, since it is larger than the sum of its proper divisors (1071777).

1944663 is a wasteful number, since it uses less digits than its factorization.

1944663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13246 (or 13239 counting only the distinct ones).

The product of its digits is 15552, while the sum is 33.

The square root of 1944663 is about 1394.5117425106. The cubic root of 1944663 is about 124.8192159965.

The spelling of 1944663 in words is "one million, nine hundred forty-four thousand, six hundred sixty-three".