6493961671 has 2 divisors, whose sum is σ = 6493961672. Its totient is φ = 6493961670.

The previous prime is 6493961651. The next prime is 6493961693. The reversal of 6493961671 is 1761693946.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6493961671 - 2²³ = 6485573063 is a prime.

It is a super-2 number, since 2×6493961671² = 84343076368834224482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6493961651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3246980835 + 3246980836.

It is an arithmetic number, because the mean of its divisors is an integer number (3246980836).

Almost surely, 2^6493961671 is an apocalyptic number.

6493961671 is a deficient number, since it is larger than the sum of its proper divisors (1).

6493961671 is an equidigital number, since it uses as much as digits as its factorization.

6493961671 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1469664, while the sum is 52.

The square root of 6493961671 is about 80585.1206551185. The cubic root of 6493961671 is about 1865.6774985862.

The spelling of 6493961671 in words is "six billion, four hundred ninety-three million, nine hundred sixty-one thousand, six hundred seventy-one".