1644384112 has 40 divisors (see below), whose sum is σ = 3718619136. Its totient is φ = 689739456.

The previous prime is 1644384101. The next prime is 1644384121. The reversal of 1644384112 is 2114834461.

It is a super-3 number, since 3×1644384112³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

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, 150928 + ... + 161455.

Almost surely, 2^1644384112 is an apocalyptic number.

It is an amenable number.

1644384112 is an abundant number, since it is smaller than the sum of its proper divisors (2074235024).

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

1644384112 is a wasteful number, since it uses less digits than its factorization.

1644384112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312445 (or 312439 counting only the distinct ones).

The product of its digits is 18432, while the sum is 34.

The square root of 1644384112 is about 40551.0063007073. The cubic root of 1644384112 is about 1180.3235998440.

The spelling of 1644384112 in words is "one billion, six hundred forty-four million, three hundred eighty-four thousand, one hundred twelve".