2539694847 has 4 divisors (see below), whose sum is σ = 3386259800. Its totient is φ = 1693129896.

The previous prime is 2539694827. The next prime is 2539694849. The reversal of 2539694847 is 7484969352.

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

It is not a de Polignac number, because 2539694847 - 2¹⁰ = 2539693823 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 (2539694849) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 423282472 + ... + 423282477.

It is an arithmetic number, because the mean of its divisors is an integer number (846564950).

Almost surely, 2^2539694847 is an apocalyptic number.

2539694847 is a deficient number, since it is larger than the sum of its proper divisors (846564953).

2539694847 is an equidigital number, since it uses as much as digits as its factorization.

2539694847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 846564952.

The product of its digits is 13063680, while the sum is 57.

The square root of 2539694847 is about 50395.3851756289. The cubic root of 2539694847 is about 1364.3543480079.

The spelling of 2539694847 in words is "two billion, five hundred thirty-nine million, six hundred ninety-four thousand, eight hundred forty-seven".