493718849 has 4 divisors (see below), whose sum is σ = 531697236. Its totient is φ = 455740464.

The previous prime is 493718837. The next prime is 493718873. The reversal of 493718849 is 948817394.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 290941249 + 202777600 = 17057^2 + 14240^2 .

It is a cyclic number.

It is not a de Polignac number, because 493718849 - 2⁴ = 493718833 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 493718849.

It is not an unprimeable number, because it can be changed into a prime (493718749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18989174 + ... + 18989199.

It is an arithmetic number, because the mean of its divisors is an integer number (132924309).

Almost surely, 2^493718849 is an apocalyptic number.

It is an amenable number.

493718849 is a deficient number, since it is larger than the sum of its proper divisors (37978387).

493718849 is a wasteful number, since it uses less digits than its factorization.

493718849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37978386.

The product of its digits is 1741824, while the sum is 53.

The square root of 493718849 is about 22219.7850799687. The cubic root of 493718849 is about 790.3629422416.

The spelling of 493718849 in words is "four hundred ninety-three million, seven hundred eighteen thousand, eight hundred forty-nine".