5185111191 has 64 divisors (see below), whose sum is σ = 8212807680. Its totient is φ = 2879141760.

The previous prime is 5185111187. The next prime is 5185111223. The reversal of 5185111191 is 1911115815.

It is not a de Polignac number, because 5185111191 - 2² = 5185111187 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5185111171) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 5231706 + ... + 5232696.

It is an arithmetic number, because the mean of its divisors is an integer number (128325120).

Almost surely, 2^5185111191 is an apocalyptic number.

5185111191 is a deficient number, since it is larger than the sum of its proper divisors (3027696489).

5185111191 is a wasteful number, since it uses less digits than its factorization.

5185111191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1356.

The product of its digits is 1800, while the sum is 33.

The square root of 5185111191 is about 72007.7161906972. The cubic root of 5185111191 is about 1730.8231340795.

The spelling of 5185111191 in words is "five billion, one hundred eighty-five million, one hundred eleven thousand, one hundred ninety-one".