3931166045897 has 2 divisors, whose sum is σ = 3931166045898. Its totient is φ = 3931166045896.

The previous prime is 3931166045771. The next prime is 3931166045903. The reversal of 3931166045897 is 7985406611393.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3746144766016 + 185021279881 = 1935496^2 + 430141^2 .

It is an emirp because it is prime and its reverse (7985406611393) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3931166045897 - 2²⁴ = 3931149268681 is a prime.

It is not a weakly prime, because it can be changed into another prime (3931166045497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1965583022948 + 1965583022949.

It is an arithmetic number, because the mean of its divisors is an integer number (1965583022949).

Almost surely, 2^{3931166045897} is an apocalyptic number.

It is an amenable number.

3931166045897 is a deficient number, since it is larger than the sum of its proper divisors (1).

3931166045897 is an equidigital number, since it uses as much as digits as its factorization.

3931166045897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 29393280, while the sum is 62.

The spelling of 3931166045897 in words is "three trillion, nine hundred thirty-one billion, one hundred sixty-six million, forty-five thousand, eight hundred ninety-seven".