493007813 has 4 divisors (see below), whose sum is σ = 497370828. Its totient is φ = 488644800.

The previous prime is 493007797. The next prime is 493007819. The reversal of 493007813 is 318700394.

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 191047684 + 301960129 = 13822^2 + 17377^2 .

It is a cyclic number.

It is not a de Polignac number, because 493007813 - 2⁴ = 493007797 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 (493007819) 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, 2181338 + ... + 2181563.

It is an arithmetic number, because the mean of its divisors is an integer number (124342707).

Almost surely, 2^493007813 is an apocalyptic number.

It is an amenable number.

493007813 is a deficient number, since it is larger than the sum of its proper divisors (4363015).

493007813 is a wasteful number, since it uses less digits than its factorization.

493007813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4363014.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 493007813 is about 22203.7792503889. The cubic root of 493007813 is about 789.9833425960.

The spelling of 493007813 in words is "four hundred ninety-three million, seven thousand, eight hundred thirteen".