395644163 has 16 divisors (see below), whose sum is σ = 426435840. Its totient is φ = 365954400.

The previous prime is 395644141. The next prime is 395644177. The reversal of 395644163 is 361446593.

It is a cyclic number.

It is not a de Polignac number, because 395644163 - 2¹² = 395640067 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 395644163.

It is not an unprimeable number, because it can be changed into a prime (395644133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142973 + ... + 145713.

It is an arithmetic number, because the mean of its divisors is an integer number (26652240).

Almost surely, 2^395644163 is an apocalyptic number.

395644163 is a deficient number, since it is larger than the sum of its proper divisors (30791677).

395644163 is a wasteful number, since it uses less digits than its factorization.

395644163 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2938.

The product of its digits is 233280, while the sum is 41.

The square root of 395644163 is about 19890.8059917139. The cubic root of 395644163 is about 734.1220256850.

The spelling of 395644163 in words is "three hundred ninety-five million, six hundred forty-four thousand, one hundred sixty-three".