2644119240 has 128 divisors (see below), whose sum is σ = 9078600960. Its totient is φ = 603500544.

The previous prime is 2644119227. The next prime is 2644119253. The reversal of 2644119240 is 429114462.

It is a Cunningham number, because it is equal to 51421²-1.

It is an interprime number because it is at equal distance from previous prime (2644119227) and next prime (2644119253).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 718044 + ... + 721716.

It is an arithmetic number, because the mean of its divisors is an integer number (70926570).

Almost surely, 2^2644119240 is an apocalyptic number.

2644119240 is a gapful number since it is divisible by the number (20) 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 2644119240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4539300480).

2644119240 is an abundant number, since it is smaller than the sum of its proper divisors (6434481720).

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

2644119240 is a wasteful number, since it uses less digits than its factorization.

2644119240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4551 (or 4547 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 2644119240 is about 51420.9999902763. Note that the first 5 decimals coincide. The cubic root of 2644119240 is about 1382.8031030585.

The spelling of 2644119240 in words is "two billion, six hundred forty-four million, one hundred nineteen thousand, two hundred forty".