538681718 has 8 divisors (see below), whose sum is σ = 823268448. Its totient is φ = 264258904.

The previous prime is 538681697. The next prime is 538681723. The reversal of 538681718 is 817186835.

It is a happy number.

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

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 2540846 + ... + 2541057.

It is an arithmetic number, because the mean of its divisors is an integer number (102908556).

Almost surely, 2^538681718 is an apocalyptic number.

538681718 is a deficient number, since it is larger than the sum of its proper divisors (284586730).

538681718 is a wasteful number, since it uses less digits than its factorization.

538681718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5081958.

The product of its digits is 322560, while the sum is 47.

The square root of 538681718 is about 23209.5178321309. The cubic root of 538681718 is about 813.6620842836.

It can be divided in two parts, 5386817 and 18, that added together give a palindrome (5386835).

The spelling of 538681718 in words is "five hundred thirty-eight million, six hundred eighty-one thousand, seven hundred eighteen".