493018613 has 4 divisors (see below), whose sum is σ = 494117100. Its totient is φ = 491920128.

The previous prime is 493018609. The next prime is 493018619. The reversal of 493018613 is 316810394.

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 132664324 + 360354289 = 11518^2 + 18983^2 .

It is a cyclic number.

It is not a de Polignac number, because 493018613 - 2² = 493018609 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 (493018619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 548570 + ... + 549467.

It is an arithmetic number, because the mean of its divisors is an integer number (123529275).

Almost surely, 2^493018613 is an apocalyptic number.

It is an amenable number.

493018613 is a deficient number, since it is larger than the sum of its proper divisors (1098487).

493018613 is a wasteful number, since it uses less digits than its factorization.

493018613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1098486.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 493018613 is about 22204.0224508984. The cubic root of 493018613 is about 789.9891111035.

The spelling of 493018613 in words is "four hundred ninety-three million, eighteen thousand, six hundred thirteen".