2853649944 has 96 divisors (see below), whose sum is σ = 8031728640. Its totient is φ = 914328000.

The previous prime is 2853649921. The next prime is 2853649949. The reversal of 2853649944 is 4499463582.

2853649944 is a `hidden beast` number, since 2 + 85 + 36 + 499 + 44 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2853649949) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 332799 + ... + 341265.

It is an arithmetic number, because the mean of its divisors is an integer number (83663840).

Almost surely, 2^2853649944 is an apocalyptic number.

2853649944 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2853649944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4015864320).

2853649944 is an abundant number, since it is smaller than the sum of its proper divisors (5178078696).

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

2853649944 is a wasteful number, since it uses less digits than its factorization.

2853649944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8661 (or 8654 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 54.

The square root of 2853649944 is about 53419.5651798103. The cubic root of 2853649944 is about 1418.4049311605.

The spelling of 2853649944 in words is "two billion, eight hundred fifty-three million, six hundred forty-nine thousand, nine hundred forty-four".