5186861187 has 8 divisors (see below), whose sum is σ = 6916377936. Its totient is φ = 3457625952.

The previous prime is 5186861153. The next prime is 5186861227. The reversal of 5186861187 is 7811686815.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 5186861187 - 2¹⁹ = 5186336899 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (5186861117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22788 + ... + 104369.

It is an arithmetic number, because the mean of its divisors is an integer number (864547242).

Almost surely, 2^5186861187 is an apocalyptic number.

5186861187 is a deficient number, since it is larger than the sum of its proper divisors (1729516749).

5186861187 is a wasteful number, since it uses less digits than its factorization.

5186861187 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140757.

The product of its digits is 645120, while the sum is 51.

The square root of 5186861187 is about 72019.8666133172. The cubic root of 5186861187 is about 1731.0178321135.

The spelling of 5186861187 in words is "five billion, one hundred eighty-six million, eight hundred sixty-one thousand, one hundred eighty-seven".