3863172455897 has 2 divisors, whose sum is σ = 3863172455898. Its totient is φ = 3863172455896.

The previous prime is 3863172455893. The next prime is 3863172455953. The reversal of 3863172455897 is 7985542713683.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2942610883216 + 920561572681 = 1715404^2 + 959459^2 .

It is an emirp because it is prime and its reverse (7985542713683) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3863172455897 - 2² = 3863172455893 is a prime.

It is not a weakly prime, because it can be changed into another prime (3863172455893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1931586227948 + 1931586227949.

It is an arithmetic number, because the mean of its divisors is an integer number (1931586227949).

Almost surely, 2^{3863172455897} is an apocalyptic number.

It is an amenable number.

3863172455897 is a deficient number, since it is larger than the sum of its proper divisors (1).

3863172455897 is an equidigital number, since it uses as much as digits as its factorization.

3863172455897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 304819200, while the sum is 68.

The spelling of 3863172455897 in words is "three trillion, eight hundred sixty-three billion, one hundred seventy-two million, four hundred fifty-five thousand, eight hundred ninety-seven".