5115685187 has 2 divisors, whose sum is σ = 5115685188. Its totient is φ = 5115685186.

The previous prime is 5115685181. The next prime is 5115685199. The reversal of 5115685187 is 7815865115.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5115685187 - 2¹⁸ = 5115423043 is a prime.

It is not a weakly prime, because it can be changed into another prime (5115685181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2557842593 + 2557842594.

It is an arithmetic number, because the mean of its divisors is an integer number (2557842594).

Almost surely, 2^5115685187 is an apocalyptic number.

5115685187 is a deficient number, since it is larger than the sum of its proper divisors (1).

5115685187 is an equidigital number, since it uses as much as digits as its factorization.

5115685187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 336000, while the sum is 47.

The square root of 5115685187 is about 71524.0182526122. The cubic root of 5115685187 is about 1723.0634501824.

The spelling of 5115685187 in words is "five billion, one hundred fifteen million, six hundred eighty-five thousand, one hundred eighty-seven".