493827161 has 4 divisors (see below), whose sum is σ = 494532324. Its totient is φ = 493122000.

The previous prime is 493827137. The next prime is 493827209. The reversal of 493827161 is 161728394.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 161728394 = 2 ⋅80864197.

It can be written as a sum of positive squares in 2 ways, for example, as 202920025 + 290907136 = 14245^2 + 17056^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-493827161 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (495827161) 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, 351530 + ... + 352931.

It is an arithmetic number, because the mean of its divisors is an integer number (123633081).

Almost surely, 2^493827161 is an apocalyptic number.

It is an amenable number.

493827161 is a deficient number, since it is larger than the sum of its proper divisors (705163).

493827161 is an equidigital number, since it uses as much as digits as its factorization.

493827161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 705162.

The product of its digits is 72576, while the sum is 41.

The square root of 493827161 is about 22222.2222336111. Note that the first 4 decimals coincide. The cubic root of 493827161 is about 790.4207346012.

The spelling of 493827161 in words is "four hundred ninety-three million, eight hundred twenty-seven thousand, one hundred sixty-one".