5185167187 has 4 divisors (see below), whose sum is σ = 5235508720. Its totient is φ = 5134825656.

The previous prime is 5185167137. The next prime is 5185167209. The reversal of 5185167187 is 7817615815.

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

It is a cyclic number.

It is not a de Polignac number, because 5185167187 - 2¹⁹ = 5184642899 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5185167187.

It is not an unprimeable number, because it can be changed into a prime (5185167137) 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, 25170612 + ... + 25170817.

It is an arithmetic number, because the mean of its divisors is an integer number (1308877180).

Almost surely, 2^5185167187 is an apocalyptic number.

5185167187 is a deficient number, since it is larger than the sum of its proper divisors (50341533).

5185167187 is a wasteful number, since it uses less digits than its factorization.

5185167187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50341532.

The product of its digits is 470400, while the sum is 49.

The square root of 5185167187 is about 72008.1050090891. The cubic root of 5185167187 is about 1730.8293646642.

The spelling of 5185167187 in words is "five billion, one hundred eighty-five million, one hundred sixty-seven thousand, one hundred eighty-seven".