538158686 has 16 divisors (see below), whose sum is σ = 871332000. Its totient is φ = 247809888.

The previous prime is 538158671. The next prime is 538158697. The reversal of 538158686 is 686851835.

It is a super-2 number, since 2×538158686² = 579229542634493192, which contains 22 as substring.

It is a Curzon number.

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 7 ways as a sum of consecutive naturals, for example, 12161 + ... + 34988.

It is an arithmetic number, because the mean of its divisors is an integer number (54458250).

Almost surely, 2^538158686 is an apocalyptic number.

538158686 is a deficient number, since it is larger than the sum of its proper divisors (333173314).

538158686 is a wasteful number, since it uses less digits than its factorization.

538158686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47603.

The product of its digits is 1382400, while the sum is 50.

The square root of 538158686 is about 23198.2474769108. The cubic root of 538158686 is about 813.3986577843.

The spelling of 538158686 in words is "five hundred thirty-eight million, one hundred fifty-eight thousand, six hundred eighty-six".