2538720536 has 32 divisors (see below), whose sum is σ = 5209807680. Its totient is φ = 1150192800.

The previous prime is 2538720521. The next prime is 2538720539. The reversal of 2538720536 is 6350278352.

It is a junction number, because it is equal to n+sod(n) for n = 2538720493 and 2538720502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2538720539) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19970 + ... + 74001.

It is an arithmetic number, because the mean of its divisors is an integer number (162806490).

Almost surely, 2^2538720536 is an apocalyptic number.

It is an amenable number.

2538720536 is an abundant number, since it is smaller than the sum of its proper divisors (2671087144).

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

2538720536 is a wasteful number, since it uses less digits than its factorization.

2538720536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94295 (or 94291 counting only the distinct ones).

The product of its (nonzero) digits is 302400, while the sum is 41.

The square root of 2538720536 is about 50385.7175794887. The cubic root of 2538720536 is about 1364.1798551975.

Adding to 2538720536 its reverse (6350278352), we get a palindrome (8888998888).

The spelling of 2538720536 in words is "two billion, five hundred thirty-eight million, seven hundred twenty thousand, five hundred thirty-six".