3819659815897 has 2 divisors, whose sum is σ = 3819659815898. Its totient is φ = 3819659815896.

The previous prime is 3819659815883. The next prime is 3819659815903. The reversal of 3819659815897 is 7985189569183.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3627268802521 + 192391013376 = 1904539^2 + 438624^2 .

It is a cyclic number.

It is not a de Polignac number, because 3819659815897 - 2¹⁵ = 3819659783129 is a prime.

It is a super-2 number, since 2×3819659815897² (a number of 26 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3819659825897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1909829907948 + 1909829907949.

It is an arithmetic number, because the mean of its divisors is an integer number (1909829907949).

Almost surely, 2^{3819659815897} is an apocalyptic number.

It is an amenable number.

3819659815897 is a deficient number, since it is larger than the sum of its proper divisors (1).

3819659815897 is an equidigital number, since it uses as much as digits as its factorization.

3819659815897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1175731200, while the sum is 79.

The spelling of 3819659815897 in words is "three trillion, eight hundred nineteen billion, six hundred fifty-nine million, eight hundred fifteen thousand, eight hundred ninety-seven".