538516786 has 8 divisors (see below), whose sum is σ = 855291420. Its totient is φ = 253419648.

The previous prime is 538516711. The next prime is 538516793. The reversal of 538516786 is 687615835.

It can be written as a sum of positive squares in 2 ways, for example, as 535691025 + 2825761 = 23145^2 + 1681^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7919331 + ... + 7919398.

Almost surely, 2^538516786 is an apocalyptic number.

538516786 is a deficient number, since it is larger than the sum of its proper divisors (316774634).

538516786 is a wasteful number, since it uses less digits than its factorization.

538516786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15838748.

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

The square root of 538516786 is about 23205.9644488222. The cubic root of 538516786 is about 813.5790342443.

The spelling of 538516786 in words is "five hundred thirty-eight million, five hundred sixteen thousand, seven hundred eighty-six".