2489518944 has 144 divisors (see below), whose sum is σ = 7764316560. Its totient is φ = 750382080.

The previous prime is 2489518931. The next prime is 2489518973. The reversal of 2489518944 is 4498159842.

It is a happy number.

2489518944 is a `hidden beast` number, since 2 + 4 + 89 + 518 + 9 + 44 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

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, 622102 + ... + 626090.

It is an arithmetic number, because the mean of its divisors is an integer number (53918865).

Almost surely, 2^2489518944 is an apocalyptic number.

2489518944 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 2489518944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3882158280).

2489518944 is an abundant number, since it is smaller than the sum of its proper divisors (5274797616).

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

2489518944 is a wasteful number, since it uses less digits than its factorization.

2489518944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4213 (or 4202 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 54.

The square root of 2489518944 is about 49895.0793565859. The cubic root of 2489518944 is about 1355.3094873644.

The spelling of 2489518944 in words is "two billion, four hundred eighty-nine million, five hundred eighteen thousand, nine hundred forty-four".