5185948849 has 4 divisors (see below), whose sum is σ = 5204670964. Its totient is φ = 5167226736.

The previous prime is 5185948829. The next prime is 5185948877. The reversal of 5185948849 is 9488495815.

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

It can be written as a sum of positive squares in 2 ways, for example, as 387893025 + 4798055824 = 19695^2 + 69268^2 .

It is a cyclic number.

It is not a de Polignac number, because 5185948849 - 2⁷ = 5185948721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5185948819) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9360642 + ... + 9361195.

It is an arithmetic number, because the mean of its divisors is an integer number (1301167741).

Almost surely, 2^5185948849 is an apocalyptic number.

It is an amenable number.

5185948849 is a deficient number, since it is larger than the sum of its proper divisors (18722115).

5185948849 is a wasteful number, since it uses less digits than its factorization.

5185948849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18722114.

The product of its digits is 16588800, while the sum is 61.

The square root of 5185948849 is about 72013.5324019035. The cubic root of 5185948849 is about 1730.9163342523.

The spelling of 5185948849 in words is "five billion, one hundred eighty-five million, nine hundred forty-eight thousand, eight hundred forty-nine".