2119909344 has 144 divisors (see below), whose sum is σ = 6814281600. Its totient is φ = 573785856.

The previous prime is 2119909321. The next prime is 2119909349. The reversal of 2119909344 is 4439099112.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 2119909296 and 2119909305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2119909349) 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, 77517 + ... + 101235.

It is an arithmetic number, because the mean of its divisors is an integer number (47321400).

Almost surely, 2^2119909344 is an apocalyptic number.

2119909344 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 2119909344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3407140800).

2119909344 is an abundant number, since it is smaller than the sum of its proper divisors (4694372256).

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

2119909344 is a wasteful number, since it uses less digits than its factorization.

2119909344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23765 (or 23750 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 2119909344 is about 46042.4732611097. The cubic root of 2119909344 is about 1284.6133461987.

The spelling of 2119909344 in words is "two billion, one hundred nineteen million, nine hundred nine thousand, three hundred forty-four".