2539651068 has 72 divisors (see below), whose sum is σ = 6645614976. Its totient is φ = 816912000.

The previous prime is 2539651067. The next prime is 2539651117. The reversal of 2539651068 is 8601569352.

2539651068 is a `hidden beast` number, since 2 + 539 + 6 + 5 + 106 + 8 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2539651067) 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, 413218 + ... + 419318.

It is an arithmetic number, because the mean of its divisors is an integer number (92300208).

Almost surely, 2^2539651068 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 2539651068, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3322807488).

2539651068 is an abundant number, since it is smaller than the sum of its proper divisors (4105963908).

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

2539651068 is a wasteful number, since it uses less digits than its factorization.

2539651068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6515 (or 6510 counting only the distinct ones).

The product of its (nonzero) digits is 388800, while the sum is 45.

The square root of 2539651068 is about 50394.9508185096. The cubic root of 2539651068 is about 1364.3465084293.

The spelling of 2539651068 in words is "two billion, five hundred thirty-nine million, six hundred fifty-one thousand, sixty-eight".