5187704391 has 6 divisors (see below), whose sum is σ = 7493350800. Its totient is φ = 3458469588.

The previous prime is 5187704381. The next prime is 5187704419. The reversal of 5187704391 is 1934077815.

5187704391 is a `hidden beast` number, since 518 + 7 + 7 + 0 + 43 + 91 = 666.

It is not a de Polignac number, because 5187704391 - 2⁵ = 5187704359 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5187704381) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 288205791 + ... + 288205808.

It is an arithmetic number, because the mean of its divisors is an integer number (1248891800).

Almost surely, 2^5187704391 is an apocalyptic number.

5187704391 is a deficient number, since it is larger than the sum of its proper divisors (2305646409).

5187704391 is a wasteful number, since it uses less digits than its factorization.

5187704391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 576411605 (or 576411602 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 45.

The square root of 5187704391 is about 72025.7203434995. The cubic root of 5187704391 is about 1731.1116282150. Note that the first 3 decimals are identical.

The spelling of 5187704391 in words is "five billion, one hundred eighty-seven million, seven hundred four thousand, three hundred ninety-one".