5185117181 has 8 divisors (see below), whose sum is σ = 5580127224. Its totient is φ = 4800107520.

The previous prime is 5185117177. The next prime is 5185117187. The reversal of 5185117181 is 1817115815.

It can be written as a sum of positive squares in 4 ways, for example, as 14212900 + 5170904281 = 3770^2 + 71909^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 5185117181 - 2² = 5185117177 is a prime.

It is a super-2 number, since 2×5185117181² = 53770880361402773522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5185117187) 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, 2499020 + ... + 2501093.

It is an arithmetic number, because the mean of its divisors is an integer number (697515903).

Almost surely, 2^5185117181 is an apocalyptic number.

It is an amenable number.

5185117181 is a deficient number, since it is larger than the sum of its proper divisors (395010043).

5185117181 is a wasteful number, since it uses less digits than its factorization.

5185117181 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5000191.

The product of its digits is 11200, while the sum is 38.

The square root of 5185117181 is about 72007.7577834500. The cubic root of 5185117181 is about 1730.8238005793.

The spelling of 5185117181 in words is "five billion, one hundred eighty-five million, one hundred seventeen thousand, one hundred eighty-one".