395418845645 has 4 divisors (see below), whose sum is σ = 474502614780. Its totient is φ = 316335076512.

The previous prime is 395418845641. The next prime is 395418845651. The reversal of 395418845645 is 546548814593.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 546548814593 = 442217 ⋅1235929.

It can be written as a sum of positive squares in 2 ways, for example, as 55778158276 + 339640687369 = 236174^2 + 582787^2 .

It is a cyclic number.

It is not a de Polignac number, because 395418845645 - 2² = 395418845641 is a prime.

It is a super-3 number, since 3×395418845645³ (a number of 36 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (395418845641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39541884560 + ... + 39541884569.

It is an arithmetic number, because the mean of its divisors is an integer number (118625653695).

Almost surely, 2^395418845645 is an apocalyptic number.

It is an amenable number.

395418845645 is a deficient number, since it is larger than the sum of its proper divisors (79083769135).

395418845645 is an equidigital number, since it uses as much as digits as its factorization.

395418845645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79083769134.

The product of its digits is 82944000, while the sum is 62.

The spelling of 395418845645 in words is "three hundred ninety-five billion, four hundred eighteen million, eight hundred forty-five thousand, six hundred forty-five".