5187717381 has 32 divisors (see below), whose sum is σ = 8676707328. Its totient is φ = 2678365440.

The previous prime is 5187717329. The next prime is 5187717391. The reversal of 5187717381 is 1837177815.

It is not a de Polignac number, because 5187717381 - 2⁹ = 5187716869 is a prime.

It is a super-2 number, since 2×5187717381² = 53824823250258998322, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 5187717381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5187717391) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31236 + ... + 106541.

It is an arithmetic number, because the mean of its divisors is an integer number (271147104).

Almost surely, 2^5187717381 is an apocalyptic number.

It is an amenable number.

5187717381 is a deficient number, since it is larger than the sum of its proper divisors (3488989947).

5187717381 is a wasteful number, since it uses less digits than its factorization.

5187717381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137961.

The product of its digits is 329280, while the sum is 48.

The square root of 5187717381 is about 72025.8105195631. The cubic root of 5187717381 is about 1731.1130731136.

The spelling of 5187717381 in words is "five billion, one hundred eighty-seven million, seven hundred seventeen thousand, three hundred eighty-one".