2579539538 has 4 divisors (see below), whose sum is σ = 3869309310. Its totient is φ = 1289769768.

The previous prime is 2579539537. The next prime is 2579539549. The reversal of 2579539538 is 8359359752.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 2513718769 + 65820769 = 50137^2 + 8113^2 .

It is not an unprimeable number, because it can be changed into a prime (2579539537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 644884883 + ... + 644884886.

Almost surely, 2^2579539538 is an apocalyptic number.

2579539538 is a deficient number, since it is larger than the sum of its proper divisors (1289769772).

2579539538 is a wasteful number, since it uses less digits than its factorization.

2579539538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1289769771.

The product of its digits is 10206000, while the sum is 56.

The square root of 2579539538 is about 50789.1675261566. The cubic root of 2579539538 is about 1371.4523709980.

The spelling of 2579539538 in words is "two billion, five hundred seventy-nine million, five hundred thirty-nine thousand, five hundred thirty-eight".