1644148 has 36 divisors (see below), whose sum is σ = 3277120. Its totient is φ = 720720.

The previous prime is 1644143. The next prime is 1644163. The reversal of 1644148 is 8414461.

It is a super-3 number, since 3×1644148³ = 13333494320453309376, which contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1644143) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20773 + ... + 20851.

2^1644148 is an apocalyptic number.

It is an amenable number.

1644148 is a deficient number, since it is larger than the sum of its proper divisors (1632972).

1644148 is a wasteful number, since it uses less digits than its factorization.

1644148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148 (or 135 counting only the distinct ones).

The product of its digits is 3072, while the sum is 28.

The square root of 1644148 is about 1282.2433466390. The cubic root of 1644148 is about 118.0267104142.

The spelling of 1644148 in words is "one million, six hundred forty-four thousand, one hundred forty-eight".