1798644 has 24 divisors (see below), whose sum is σ = 4311328. Its totient is φ = 583200.

The previous prime is 1798639. The next prime is 1798649. The reversal of 1798644 is 4468971.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1798639) and next prime (1798649).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1798649) 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 7 ways as a sum of consecutive naturals, for example, 1582 + ... + 2469.

2^1798644 is an apocalyptic number.

It is an amenable number.

1798644 is an abundant number, since it is smaller than the sum of its proper divisors (2512684).

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

1798644 is a wasteful number, since it uses less digits than its factorization.

1798644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4095 (or 4093 counting only the distinct ones).

The product of its digits is 48384, while the sum is 39.

The square root of 1798644 is about 1341.1353399266. The cubic root of 1798644 is about 121.6134860678.

It can be divided in two parts, 1798 and 644, that added together give a palindrome (2442).

The spelling of 1798644 in words is "one million, seven hundred ninety-eight thousand, six hundred forty-four".