494163865 has 8 divisors (see below), whose sum is σ = 638611848. Its totient is φ = 364920960.

The previous prime is 494163863. The next prime is 494163877. The reversal of 494163865 is 568361494.

It can be written as a sum of positive squares in 4 ways, for example, as 746496 + 493417369 = 864^2 + 22213^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 494163865 - 2¹ = 494163863 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (494163863) 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 7 ways as a sum of consecutive naturals, for example, 3801196 + ... + 3801325.

It is an arithmetic number, because the mean of its divisors is an integer number (79826481).

Almost surely, 2^494163865 is an apocalyptic number.

It is an amenable number.

494163865 is a deficient number, since it is larger than the sum of its proper divisors (144447983).

494163865 is a wasteful number, since it uses less digits than its factorization.

494163865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7602539.

The product of its digits is 622080, while the sum is 46.

The square root of 494163865 is about 22229.7967826969. The cubic root of 494163865 is about 790.6003368186.

The spelling of 494163865 in words is "four hundred ninety-four million, one hundred sixty-three thousand, eight hundred sixty-five".