493018 has 4 divisors (see below), whose sum is σ = 739530. Its totient is φ = 246508.

The previous prime is 493013. The next prime is 493021. The reversal of 493018 is 810394.

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

It can be written as a sum of positive squares in only one way, i.e., 480249 + 12769 = 693^2 + 113^2 .

It is a junction number, because it is equal to n+sod(n) for n = 492983 and 493001.

It is not an unprimeable number, because it can be changed into a prime (493013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123253 + ... + 123256.

2⁴⁹³⁰¹⁸ is an apocalyptic number.

493018 is a deficient number, since it is larger than the sum of its proper divisors (246512).

493018 is a wasteful number, since it uses less digits than its factorization.

493018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246511.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 493018 is about 702.1524051087. The cubic root of 493018 is about 78.9988783689.

The spelling of 493018 in words is "four hundred ninety-three thousand, eighteen".