395431738634 has 16 divisors (see below), whose sum is σ = 601228656000. Its totient is φ = 195026960544.

The previous prime is 395431738577. The next prime is 395431738657. The reversal of 395431738634 is 436837134593.

It is a self number, because there is not a number n which added to its sum of digits gives 395431738634.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1027172 + ... + 1358655.

It is an arithmetic number, because the mean of its divisors is an integer number (37576791000).

Almost surely, 2^395431738634 is an apocalyptic number.

395431738634 is a deficient number, since it is larger than the sum of its proper divisors (205796917366).

395431738634 is a wasteful number, since it uses less digits than its factorization.

395431738634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2386957.

The product of its digits is 19595520, while the sum is 56.

The spelling of 395431738634 in words is "three hundred ninety-five billion, four hundred thirty-one million, seven hundred thirty-eight thousand, six hundred thirty-four".