2539836813 has 8 divisors (see below), whose sum is σ = 3396681376. Its totient is φ = 1688108400.

The previous prime is 2539836757. The next prime is 2539836821. The reversal of 2539836813 is 3186389352.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2539836813 - 2⁶ = 2539836749 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2539836833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1277878 + ... + 1279863.

It is an arithmetic number, because the mean of its divisors is an integer number (424585172).

Almost surely, 2^2539836813 is an apocalyptic number.

It is an amenable number.

2539836813 is a deficient number, since it is larger than the sum of its proper divisors (856844563).

2539836813 is a wasteful number, since it uses less digits than its factorization.

2539836813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2558075.

The product of its digits is 933120, while the sum is 48.

The square root of 2539836813 is about 50396.7936777728. The cubic root of 2539836813 is about 1364.3797694767.

The spelling of 2539836813 in words is "two billion, five hundred thirty-nine million, eight hundred thirty-six thousand, eight hundred thirteen".