5187160861 has 2 divisors, whose sum is σ = 5187160862. Its totient is φ = 5187160860.

The previous prime is 5187160843. The next prime is 5187160877. The reversal of 5187160861 is 1680617815.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3934425625 + 1252735236 = 62725^2 + 35394^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5187160861 is a prime.

It is a super-2 number, since 2×5187160861² = 53813275595780522642, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5187160361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2593580430 + 2593580431.

It is an arithmetic number, because the mean of its divisors is an integer number (2593580431).

Almost surely, 2^5187160861 is an apocalyptic number.

It is an amenable number.

5187160861 is a deficient number, since it is larger than the sum of its proper divisors (1).

5187160861 is an equidigital number, since it uses as much as digits as its factorization.

5187160861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 80640, while the sum is 43.

The square root of 5187160861 is about 72021.9470786510. The cubic root of 5187160861 is about 1731.0511683343.

The spelling of 5187160861 in words is "five billion, one hundred eighty-seven million, one hundred sixty thousand, eight hundred sixty-one".