5185118491 has 8 divisors (see below), whose sum is σ = 5929634304. Its totient is φ = 4441548840.

The previous prime is 5185118479. The next prime is 5185118503. The reversal of 5185118491 is 1948115815.

It is an interprime number because it is at equal distance from previous prime (5185118479) and next prime (5185118503).

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 5185118491 - 2⁷ = 5185118363 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5185118441) 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, 224755 + ... + 246748.

It is an arithmetic number, because the mean of its divisors is an integer number (741204288).

Almost surely, 2^5185118491 is an apocalyptic number.

5185118491 is a deficient number, since it is larger than the sum of its proper divisors (744515813).

5185118491 is a wasteful number, since it uses less digits than its factorization.

5185118491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473081.

The product of its digits is 57600, while the sum is 43.

The square root of 5185118491 is about 72007.7668796915. The cubic root of 5185118491 is about 1730.8239463412.

The spelling of 5185118491 in words is "five billion, one hundred eighty-five million, one hundred eighteen thousand, four hundred ninety-one".