5185086864 has 80 divisors (see below), whose sum is σ = 13646507520. Its totient is φ = 1696020480.

The previous prime is 5185086839. The next prime is 5185086883. The reversal of 5185086864 is 4686805815.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1400664 + ... + 1404360.

It is an arithmetic number, because the mean of its divisors is an integer number (170581344).

Almost surely, 2^5185086864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5185086864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6823253760).

5185086864 is an abundant number, since it is smaller than the sum of its proper divisors (8461420656).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5185086864 is a wasteful number, since it uses less digits than its factorization.

5185086864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4248 (or 4242 counting only the distinct ones).

The product of its (nonzero) digits is 1843200, while the sum is 51.

The square root of 5185086864 is about 72007.5472711021. The cubic root of 5185086864 is about 1730.8204272394.

The spelling of 5185086864 in words is "five billion, one hundred eighty-five million, eighty-six thousand, eight hundred sixty-four".