5091856539 has 24 divisors (see below), whose sum is σ = 8528513280. Its totient is φ = 2645118960.

The previous prime is 5091856489. The next prime is 5091856571. The reversal of 5091856539 is 9356581905.

It is not a de Polignac number, because 5091856539 - 2⁹ = 5091856027 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5091856491 and 5091856500.

It is not an unprimeable number, because it can be changed into a prime (5091856579) 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, 999399 + ... + 1004480.

It is an arithmetic number, because the mean of its divisors is an integer number (355354720).

Almost surely, 2^5091856539 is an apocalyptic number.

5091856539 is a deficient number, since it is larger than the sum of its proper divisors (3436656741).

5091856539 is a wasteful number, since it uses less digits than its factorization.

5091856539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2003911 (or 2003900 counting only the distinct ones).

The product of its (nonzero) digits is 1458000, while the sum is 51.

The square root of 5091856539 is about 71357.2458759445. The cubic root of 5091856539 is about 1720.3839663561.

The spelling of 5091856539 in words is "five billion, ninety-one million, eight hundred fifty-six thousand, five hundred thirty-nine".