6481111187 has 2 divisors, whose sum is σ = 6481111188. Its totient is φ = 6481111186.

The previous prime is 6481111181. The next prime is 6481111213. The reversal of 6481111187 is 7811111846.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6481111187 - 2¹² = 6481107091 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6481111187.

It is not a weakly prime, because it can be changed into another prime (6481111181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3240555593 + 3240555594.

It is an arithmetic number, because the mean of its divisors is an integer number (3240555594).

Almost surely, 2^6481111187 is an apocalyptic number.

6481111187 is a deficient number, since it is larger than the sum of its proper divisors (1).

6481111187 is an equidigital number, since it uses as much as digits as its factorization.

6481111187 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10752, while the sum is 38.

The square root of 6481111187 is about 80505.3488098772. The cubic root of 6481111187 is about 1864.4460628016.

The spelling of 6481111187 in words is "six billion, four hundred eighty-one million, one hundred eleven thousand, one hundred eighty-seven".