2538812655 has 12 divisors (see below), whose sum is σ = 4400608680. Its totient is φ = 1354033392.

The previous prime is 2538812597. The next prime is 2538812663. The reversal of 2538812655 is 5562188352.

2538812655 is a `hidden beast` number, since 2 + 5 + 388 + 1 + 265 + 5 = 666.

It is not a de Polignac number, because 2538812655 - 2¹⁰ = 2538811631 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 56418059 = 2538812655 / (2 + 5 + 3 + 8 + 8 + 1 + 2 + 6 + 5 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 2538812655.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28208985 + ... + 28209074.

It is an arithmetic number, because the mean of its divisors is an integer number (366717390).

Almost surely, 2^2538812655 is an apocalyptic number.

2538812655 is a deficient number, since it is larger than the sum of its proper divisors (1861796025).

2538812655 is a wasteful number, since it uses less digits than its factorization.

2538812655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56418070 (or 56418067 counting only the distinct ones).

The product of its digits is 576000, while the sum is 45.

The square root of 2538812655 is about 50386.6317092143. The cubic root of 2538812655 is about 1364.1963550265.

The spelling of 2538812655 in words is "two billion, five hundred thirty-eight million, eight hundred twelve thousand, six hundred fifty-five".