538808618 has 4 divisors (see below), whose sum is σ = 808212930. Its totient is φ = 269404308.

The previous prime is 538808597. The next prime is 538808651. The reversal of 538808618 is 816808835.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 816808835 = 5 ⋅163361767.

It can be written as a sum of positive squares in only one way, i.e., 337934689 + 200873929 = 18383^2 + 14173^2 .

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 as a sum of consecutive naturals, namely, 134702153 + ... + 134702156.

Almost surely, 2^538808618 is an apocalyptic number.

538808618 is a deficient number, since it is larger than the sum of its proper divisors (269404312).

538808618 is a wasteful number, since it uses less digits than its factorization.

538808618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269404311.

The product of its (nonzero) digits is 368640, while the sum is 47.

The square root of 538808618 is about 23212.2514633975. The cubic root of 538808618 is about 813.7259721095.

The spelling of 538808618 in words is "five hundred thirty-eight million, eight hundred eight thousand, six hundred eighteen".