1644414112 has 48 divisors (see below), whose sum is σ = 3564237600. Its totient is φ = 740586240.

The previous prime is 1644414103. The next prime is 1644414113. The reversal of 1644414112 is 2114144461.

It is a super-3 number, since 3×1644414112³ (a number of 29 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1644414113) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16939 + ... + 59797.

It is an arithmetic number, because the mean of its divisors is an integer number (74254950).

It is a self-describing number.

Almost surely, 2^1644414112 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1644414112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1782118800).

1644414112 is an abundant number, since it is smaller than the sum of its proper divisors (1919823488).

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

1644414112 is a wasteful number, since it uses less digits than its factorization.

1644414112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42989 (or 42981 counting only the distinct ones).

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

The square root of 1644414112 is about 40551.3762035273. The cubic root of 1644414112 is about 1180.3307777072.

Adding to 1644414112 its reverse (2114144461), we get a palindrome (3758558573).

The spelling of 1644414112 in words is "one billion, six hundred forty-four million, four hundred fourteen thousand, one hundred twelve".