2538886779 has 24 divisors (see below), whose sum is σ = 4308416112. Its totient is φ = 1420355520.

The previous prime is 2538886771. The next prime is 2538886781. The reversal of 2538886779 is 9776888352.

It is not a de Polignac number, because 2538886779 - 2³ = 2538886771 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2538886771) 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, 985072 + ... + 987645.

It is an arithmetic number, because the mean of its divisors is an integer number (179517338).

Almost surely, 2^2538886779 is an apocalyptic number.

2538886779 is a deficient number, since it is larger than the sum of its proper divisors (1769529333).

2538886779 is a wasteful number, since it uses less digits than its factorization.

2538886779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1972747 (or 1972744 counting only the distinct ones).

The product of its digits is 40642560, while the sum is 63.

The square root of 2538886779 is about 50387.3672560891. The cubic root of 2538886779 is about 1364.2096314041.

The spelling of 2538886779 in words is "two billion, five hundred thirty-eight million, eight hundred eighty-six thousand, seven hundred seventy-nine".