5118631786 has 8 divisors (see below), whose sum is σ = 7681163364. Its totient is φ = 2558244000.

The previous prime is 5118631783. The next prime is 5118631801. The reversal of 5118631786 is 6871368115.

It can be written as a sum of positive squares in 2 ways, for example, as 4872738025 + 245893761 = 69805^2 + 15681^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (5118631781) 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, 529965 + ... + 539536.

Almost surely, 2^5118631786 is an apocalyptic number.

5118631786 is a deficient number, since it is larger than the sum of its proper divisors (2562531578).

5118631786 is a wasteful number, since it uses less digits than its factorization.

5118631786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1071896.

The product of its digits is 241920, while the sum is 46.

The square root of 5118631786 is about 71544.6139552098. The cubic root of 5118631786 is about 1723.3942108632.

The spelling of 5118631786 in words is "five billion, one hundred eighteen million, six hundred thirty-one thousand, seven hundred eighty-six".