6481626191 has 2 divisors, whose sum is σ = 6481626192. Its totient is φ = 6481626190.

The previous prime is 6481626167. The next prime is 6481626197. The reversal of 6481626191 is 1916261846.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6481626191 is a prime.

It is a super-2 number, since 2×6481626191² = 84022956159714336962, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6481626197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3240813095 + 3240813096.

It is an arithmetic number, because the mean of its divisors is an integer number (3240813096).

Almost surely, 2^6481626191 is an apocalyptic number.

6481626191 is a deficient number, since it is larger than the sum of its proper divisors (1).

6481626191 is an equidigital number, since it uses as much as digits as its factorization.

6481626191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 44.

The square root of 6481626191 is about 80508.5473164185. The cubic root of 6481626191 is about 1864.4954458842.

The spelling of 6481626191 in words is "six billion, four hundred eighty-one million, six hundred twenty-six thousand, one hundred ninety-one".