5108449865 has 4 divisors (see below), whose sum is σ = 6130139844. Its totient is φ = 4086759888.

The previous prime is 5108449861. The next prime is 5108449883. The reversal of 5108449865 is 5689448015.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2299873849 + 2808576016 = 47957^2 + 52996^2 .

It is a cyclic number.

It is not a de Polignac number, because 5108449865 - 2² = 5108449861 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5108449861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 510844982 + ... + 510844991.

It is an arithmetic number, because the mean of its divisors is an integer number (1532534961).

Almost surely, 2^5108449865 is an apocalyptic number.

It is an amenable number.

5108449865 is a deficient number, since it is larger than the sum of its proper divisors (1021689979).

5108449865 is a wasteful number, since it uses less digits than its factorization.

5108449865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1021689978.

The product of its (nonzero) digits is 1382400, while the sum is 50.

The square root of 5108449865 is about 71473.4206890925. The cubic root of 5108449865 is about 1722.2507339612.

The spelling of 5108449865 in words is "five billion, one hundred eight million, four hundred forty-nine thousand, eight hundred sixty-five".