2541287868 has 96 divisors (see below), whose sum is σ = 7068192768. Its totient is φ = 695347200.

The previous prime is 2541287821. The next prime is 2541287869. The reversal of 2541287868 is 8687821452.

It is a self number, because there is not a number n which added to its sum of digits gives 2541287868.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2541287869) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 247558 + ... + 257618.

It is an arithmetic number, because the mean of its divisors is an integer number (73627008).

Almost surely, 2^2541287868 is an apocalyptic number.

2541287868 is a gapful number since it is divisible by the number (28) 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 2541287868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3534096384).

2541287868 is an abundant number, since it is smaller than the sum of its proper divisors (4526904900).

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

2541287868 is a wasteful number, since it uses less digits than its factorization.

2541287868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10203 (or 10201 counting only the distinct ones).

The product of its digits is 1720320, while the sum is 51.

The square root of 2541287868 is about 50411.1879249041. The cubic root of 2541287868 is about 1364.6395516756.

The spelling of 2541287868 in words is "two billion, five hundred forty-one million, two hundred eighty-seven thousand, eight hundred sixty-eight".