2581198848 has 144 divisors (see below), whose sum is σ = 7518911400. Its totient is φ = 853032960.

The previous prime is 2581198843. The next prime is 2581198877. The reversal of 2581198848 is 8488911852.

2581198848 is a `hidden beast` number, since 2 + 581 + 19 + 8 + 8 + 48 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 2581198794 and 2581198803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2581198843) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2414058 + ... + 2415126.

Almost surely, 2^2581198848 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 2581198848, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3759455700).

2581198848 is an abundant number, since it is smaller than the sum of its proper divisors (4937712552).

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

2581198848 is a wasteful number, since it uses less digits than its factorization.

2581198848 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1228 (or 1205 counting only the distinct ones).

The product of its digits is 1474560, while the sum is 54.

The square root of 2581198848 is about 50805.5001746858. The cubic root of 2581198848 is about 1371.7463739687.

The spelling of 2581198848 in words is "two billion, five hundred eighty-one million, one hundred ninety-eight thousand, eight hundred forty-eight".