2539126639 has 24 divisors (see below), whose sum is σ = 3060393840. Its totient is φ = 2098002816.

The previous prime is 2539126631. The next prime is 2539126643. The reversal of 2539126639 is 9366219352.

It is not a de Polignac number, because 2539126639 - 2³ = 2539126631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2539126631) 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, 1330524 + ... + 1332430.

It is an arithmetic number, because the mean of its divisors is an integer number (127516410).

Almost surely, 2^2539126639 is an apocalyptic number.

2539126639 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

2539126639 is a deficient number, since it is larger than the sum of its proper divisors (521267201).

2539126639 is a wasteful number, since it uses less digits than its factorization.

2539126639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2887 (or 2880 counting only the distinct ones).

The product of its digits is 524880, while the sum is 46.

The square root of 2539126639 is about 50389.7473599541. The cubic root of 2539126639 is about 1364.2525910483.

The spelling of 2539126639 in words is "two billion, five hundred thirty-nine million, one hundred twenty-six thousand, six hundred thirty-nine".