8181714397 has 2 divisors, whose sum is σ = 8181714398. Its totient is φ = 8181714396.

The previous prime is 8181714379. The next prime is 8181714413. The reversal of 8181714397 is 7934171818.

Together with previous prime (8181714379) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4160379001 + 4021335396 = 64501^2 + 63414^2 .

It is a cyclic number.

It is not a de Polignac number, because 8181714397 - 2³¹ = 6034230749 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8181714397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8181714337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4090857198 + 4090857199.

It is an arithmetic number, because the mean of its divisors is an integer number (4090857199).

Almost surely, 2^8181714397 is an apocalyptic number.

It is an amenable number.

8181714397 is a deficient number, since it is larger than the sum of its proper divisors (1).

8181714397 is an equidigital number, since it uses as much as digits as its factorization.

8181714397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 338688, while the sum is 49.

The square root of 8181714397 is about 90452.8296793417. The cubic root of 8181714397 is about 2015.0296384798.

The spelling of 8181714397 in words is "eight billion, one hundred eighty-one million, seven hundred fourteen thousand, three hundred ninety-seven".