538889388887 has 4 divisors (see below), whose sum is σ = 538926854760. Its totient is φ = 538851923016.

The previous prime is 538889388841. The next prime is 538889388901. The reversal of 538889388887 is 788883988835.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 538889388887 - 2¹⁴ = 538889372503 is a prime.

It is a super-3 number, since 3×538889388887³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (538889388827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18711353 + ... + 18740130.

It is an arithmetic number, because the mean of its divisors is an integer number (134731713690).

Almost surely, 2^538889388887 is an apocalyptic number.

538889388887 is a deficient number, since it is larger than the sum of its proper divisors (37465873).

538889388887 is a wasteful number, since it uses less digits than its factorization.

538889388887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37465872.

The product of its digits is 5945425920, while the sum is 83.

The spelling of 538889388887 in words is "five hundred thirty-eight billion, eight hundred eighty-nine million, three hundred eighty-eight thousand, eight hundred eighty-seven".