5186685418 has 4 divisors (see below), whose sum is σ = 7780028130. Its totient is φ = 2593342708.

The previous prime is 5186685401. The next prime is 5186685451. The reversal of 5186685418 is 8145866815.

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

It can be written as a sum of positive squares in only one way, i.e., 3869213209 + 1317472209 = 62203^2 + 36297^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1296671353 + ... + 1296671356.

Almost surely, 2^5186685418 is an apocalyptic number.

5186685418 is a deficient number, since it is larger than the sum of its proper divisors (2593342712).

5186685418 is a wasteful number, since it uses less digits than its factorization.

5186685418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2593342711.

The product of its digits is 1843200, while the sum is 52.

The square root of 5186685418 is about 72018.6463216298. The cubic root of 5186685418 is about 1730.9982786881.

The spelling of 5186685418 in words is "five billion, one hundred eighty-six million, six hundred eighty-five thousand, four hundred eighteen".