5186889681 has 4 divisors (see below), whose sum is σ = 6915852912. Its totient is φ = 3457926452.

The previous prime is 5186889671. The next prime is 5186889691. The reversal of 5186889681 is 1869886815.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (5186889671) and next prime (5186889691).

It is a cyclic number.

It is not a de Polignac number, because 5186889681 - 2¹¹ = 5186887633 is a prime.

It is a super-2 number, since 2×5186889681² = 53807649125728563522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5186889671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 864481611 + ... + 864481616.

It is an arithmetic number, because the mean of its divisors is an integer number (1728963228).

Almost surely, 2^5186889681 is an apocalyptic number.

It is an amenable number.

5186889681 is a deficient number, since it is larger than the sum of its proper divisors (1728963231).

5186889681 is a wasteful number, since it uses less digits than its factorization.

5186889681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1728963230.

The product of its digits is 6635520, while the sum is 60.

The square root of 5186889681 is about 72020.0644334619. The cubic root of 5186889681 is about 1731.0210018875.

The spelling of 5186889681 in words is "five billion, one hundred eighty-six million, eight hundred eighty-nine thousand, six hundred eighty-one".