5165081191 has 4 divisors (see below), whose sum is σ = 5252625000. Its totient is φ = 5077537384.

The previous prime is 5165081183. The next prime is 5165081203. The reversal of 5165081191 is 1911805615.

5165081191 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 5165081191 - 2³ = 5165081183 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 5165081191.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5165081171) 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, 43771816 + ... + 43771933.

It is an arithmetic number, because the mean of its divisors is an integer number (1313156250).

Almost surely, 2^5165081191 is an apocalyptic number.

5165081191 is a deficient number, since it is larger than the sum of its proper divisors (87543809).

5165081191 is an equidigital number, since it uses as much as digits as its factorization.

5165081191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87543808.

The product of its (nonzero) digits is 10800, while the sum is 37.

The square root of 5165081191 is about 71868.4992955885. The cubic root of 5165081191 is about 1728.5915442262.

The spelling of 5165081191 in words is "five billion, one hundred sixty-five million, eighty-one thousand, one hundred ninety-one".