395493931873 has 4 divisors (see below), whose sum is σ = 400258919088. Its totient is φ = 390728944660.

The previous prime is 395493931871. The next prime is 395493931949. The reversal of 395493931873 is 378139394593.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 378139394593 = 134507 ⋅2811299.

It is a cyclic number.

It is not a de Polignac number, because 395493931873 - 2¹ = 395493931871 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (395493931871) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2382493483 + ... + 2382493648.

It is an arithmetic number, because the mean of its divisors is an integer number (100064729772).

Almost surely, 2^395493931873 is an apocalyptic number.

It is an amenable number.

395493931873 is a deficient number, since it is larger than the sum of its proper divisors (4764987215).

395493931873 is an equidigital number, since it uses as much as digits as its factorization.

395493931873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4764987214.

The product of its digits is 66134880, while the sum is 64.

The spelling of 395493931873 in words is "three hundred ninety-five billion, four hundred ninety-three million, nine hundred thirty-one thousand, eight hundred seventy-three".