395066980169 has 2 divisors, whose sum is σ = 395066980170. Its totient is φ = 395066980168.

The previous prime is 395066980153. The next prime is 395066980181. The reversal of 395066980169 is 961089660593.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 271974766144 + 123092214025 = 521512^2 + 350845^2 .

It is a cyclic number.

It is not a de Polignac number, because 395066980169 - 2⁴ = 395066980153 is a prime.

It is a super-2 number, since 2×395066980169² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (395066980109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197533490084 + 197533490085.

It is an arithmetic number, because the mean of its divisors is an integer number (197533490085).

Almost surely, 2^395066980169 is an apocalyptic number.

It is an amenable number.

395066980169 is a deficient number, since it is larger than the sum of its proper divisors (1).

395066980169 is an equidigital number, since it uses as much as digits as its factorization.

395066980169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18895680, while the sum is 62.

The spelling of 395066980169 in words is "three hundred ninety-five billion, sixty-six million, nine hundred eighty thousand, one hundred sixty-nine".