5187189851 has 2 divisors, whose sum is σ = 5187189852. Its totient is φ = 5187189850.

The previous prime is 5187189823. The next prime is 5187189857. The reversal of 5187189851 is 1589817815.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5187189851 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 5187189793 and 5187189802.

It is not a weakly prime, because it can be changed into another prime (5187189857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2593594925 + 2593594926.

It is an arithmetic number, because the mean of its divisors is an integer number (2593594926).

Almost surely, 2^5187189851 is an apocalyptic number.

5187189851 is a deficient number, since it is larger than the sum of its proper divisors (1).

5187189851 is an equidigital number, since it uses as much as digits as its factorization.

5187189851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 806400, while the sum is 53.

The square root of 5187189851 is about 72022.1483364666. The cubic root of 5187189851 is about 1731.0543931607.

The spelling of 5187189851 in words is "five billion, one hundred eighty-seven million, one hundred eighty-nine thousand, eight hundred fifty-one".