5185517939 has 16 divisors (see below), whose sum is σ = 6286258368. Its totient is φ = 4175711232.

The previous prime is 5185517929. The next prime is 5185517957. The reversal of 5185517939 is 9397155815.

It is a de Polignac number, because none of the positive numbers 2^k-5185517939 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5185517929) 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 15 ways as a sum of consecutive naturals, for example, 27167 + ... + 105399.

It is an arithmetic number, because the mean of its divisors is an integer number (392891148).

Almost surely, 2^5185517939 is an apocalyptic number.

5185517939 is a deficient number, since it is larger than the sum of its proper divisors (1100740429).

5185517939 is a wasteful number, since it uses less digits than its factorization.

5185517939 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78814.

The product of its digits is 1701000, while the sum is 53.

The square root of 5185517939 is about 72010.5404715171. The cubic root of 5185517939 is about 1730.8683912536.

The spelling of 5185517939 in words is "five billion, one hundred eighty-five million, five hundred seventeen thousand, nine hundred thirty-nine".