538651678 has 8 divisors (see below), whose sum is σ = 825168672. Its totient is φ = 263595456.

The previous prime is 538651643. The next prime is 538651679. The reversal of 538651678 is 876156835.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538651679) 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, 2865075 + ... + 2865262.

It is an arithmetic number, because the mean of its divisors is an integer number (103146084).

Almost surely, 2^538651678 is an apocalyptic number.

538651678 is a deficient number, since it is larger than the sum of its proper divisors (286516994).

538651678 is a wasteful number, since it uses less digits than its factorization.

538651678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5730386.

The product of its digits is 1209600, while the sum is 49.

The square root of 538651678 is about 23208.8706748088. The cubic root of 538651678 is about 813.6469591719.

The spelling of 538651678 in words is "five hundred thirty-eight million, six hundred fifty-one thousand, six hundred seventy-eight".