2538194568 has 128 divisors (see below), whose sum is σ = 7872184320. Its totient is φ = 664070400.

The previous prime is 2538194563. The next prime is 2538194671. The reversal of 2538194568 is 8654918352.

It is a self number, because there is not a number n which added to its sum of digits gives 2538194568.

It is not an unprimeable number, because it can be changed into a prime (2538194563) 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, 272793 + ... + 281943.

It is an arithmetic number, because the mean of its divisors is an integer number (61501440).

Almost surely, 2^2538194568 is an apocalyptic number.

2538194568 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 2538194568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3936092160).

2538194568 is an abundant number, since it is smaller than the sum of its proper divisors (5333989752).

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

2538194568 is a wasteful number, since it uses less digits than its factorization.

2538194568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9307 (or 9303 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 51.

The square root of 2538194568 is about 50380.4978935302. The cubic root of 2538194568 is about 1364.0856391680.

The spelling of 2538194568 in words is "two billion, five hundred thirty-eight million, one hundred ninety-four thousand, five hundred sixty-eight".