5185218845 has 16 divisors (see below), whose sum is σ = 6551832000. Its totient is φ = 3928601088.

The previous prime is 5185218839. The next prime is 5185218847. The reversal of 5185218845 is 5488125815.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5185218845 is a prime.

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a self number, because there is not a number n which added to its sum of digits gives 5185218845.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5185218847) by changing a digit.

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, 385646 + ... + 398864.

It is an arithmetic number, because the mean of its divisors is an integer number (409489500).

Almost surely, 2^5185218845 is an apocalyptic number.

It is an amenable number.

5185218845 is a deficient number, since it is larger than the sum of its proper divisors (1366613155).

5185218845 is a wasteful number, since it uses less digits than its factorization.

5185218845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17372.

The product of its digits is 512000, while the sum is 47.

The square root of 5185218845 is about 72008.4637039286. The cubic root of 5185218845 is about 1730.8351125268.

The spelling of 5185218845 in words is "five billion, one hundred eighty-five million, two hundred eighteen thousand, eight hundred forty-five".