493163261 has 4 divisors (see below), whose sum is σ = 493208412. Its totient is φ = 493118112.

The previous prime is 493163257. The next prime is 493163273. The reversal of 493163261 is 162361394.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 356039161 + 137124100 = 18869^2 + 11710^2 .

It is a cyclic number.

It is not a de Polignac number, because 493163261 - 2² = 493163257 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (493123261) 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, 5201 + ... + 31833.

It is an arithmetic number, because the mean of its divisors is an integer number (123302103).

Almost surely, 2^493163261 is an apocalyptic number.

It is an amenable number.

493163261 is a deficient number, since it is larger than the sum of its proper divisors (45151).

493163261 is a wasteful number, since it uses less digits than its factorization.

493163261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45150.

The product of its digits is 23328, while the sum is 35.

The square root of 493163261 is about 22207.2794596727. The cubic root of 493163261 is about 790.0663625286.

The spelling of 493163261 in words is "four hundred ninety-three million, one hundred sixty-three thousand, two hundred sixty-one".