2389109856 has 144 divisors (see below), whose sum is σ = 7679568960. Its totient is φ = 646652160.

The previous prime is 2389109839. The next prime is 2389109867. The reversal of 2389109856 is 6589019832.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 2389109799 and 2389109808.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 76011 + ... + 102741.

It is an arithmetic number, because the mean of its divisors is an integer number (53330340).

Almost surely, 2^2389109856 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 2389109856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3839784480).

2389109856 is an abundant number, since it is smaller than the sum of its proper divisors (5290459104).

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

2389109856 is a wasteful number, since it uses less digits than its factorization.

2389109856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26777 (or 26762 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 51.

The square root of 2389109856 is about 48878.5214178989. The cubic root of 2389109856 is about 1336.8377680224.

The spelling of 2389109856 in words is "two billion, three hundred eighty-nine million, one hundred nine thousand, eight hundred fifty-six".