395366565493 has 4 divisors (see below), whose sum is σ = 395372906028. Its totient is φ = 395360224960.

The previous prime is 395366565449. The next prime is 395366565497. The reversal of 395366565493 is 394565663593.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 394565663593 = 47 ⋅8395014119.

It can be written as a sum of positive squares in 2 ways, for example, as 354480916689 + 40885648804 = 595383^2 + 202202^2 .

It is a cyclic number.

It is not a de Polignac number, because 395366565493 - 2³³ = 386776630901 is a prime.

It is a super-2 number, since 2×395366565493² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (395366565497) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3075796 + ... + 3201757.

It is an arithmetic number, because the mean of its divisors is an integer number (98843226507).

Almost surely, 2^395366565493 is an apocalyptic number.

It is an amenable number.

395366565493 is a deficient number, since it is larger than the sum of its proper divisors (6340535).

395366565493 is an equidigital number, since it uses as much as digits as its factorization.

395366565493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6340534.

The product of its digits is 236196000, while the sum is 64.

The spelling of 395366565493 in words is "three hundred ninety-five billion, three hundred sixty-six million, five hundred sixty-five thousand, four hundred ninety-three".