6497383181 has 2 divisors, whose sum is σ = 6497383182. Its totient is φ = 6497383180.

The previous prime is 6497383163. The next prime is 6497383231. The reversal of 6497383181 is 1813837946.

It is an a-pointer prime, because the next prime (6497383231) can be obtained adding 6497383181 to its sum of digits (50).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6497166025 + 217156 = 80605^2 + 466^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6497383181 is a prime.

It is a super-2 number, since 2×6497383181² = 84431976401483357522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6497383111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3248691590 + 3248691591.

It is an arithmetic number, because the mean of its divisors is an integer number (3248691591).

Almost surely, 2^6497383181 is an apocalyptic number.

It is an amenable number.

6497383181 is a deficient number, since it is larger than the sum of its proper divisors (1).

6497383181 is an equidigital number, since it uses as much as digits as its factorization.

6497383181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 870912, while the sum is 50.

The square root of 6497383181 is about 80606.3470267695. The cubic root of 6497383181 is about 1866.0051010461.

The spelling of 6497383181 in words is "six billion, four hundred ninety-seven million, three hundred eighty-three thousand, one hundred eighty-one".