493497818 has 8 divisors (see below), whose sum is σ = 807541920. Its totient is φ = 224317180.

The previous prime is 493497779. The next prime is 493497839. The reversal of 493497818 is 818794394.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×493497818² = 487080192741522248, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 493497818.

It is an unprimeable number.

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, 11215838 + ... + 11215881.

It is an arithmetic number, because the mean of its divisors is an integer number (100942740).

Almost surely, 2^493497818 is an apocalyptic number.

493497818 is a deficient number, since it is larger than the sum of its proper divisors (314044102).

493497818 is a wasteful number, since it uses less digits than its factorization.

493497818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22431732.

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

The square root of 493497818 is about 22214.8107801980. The cubic root of 493497818 is about 790.2449798373.

The spelling of 493497818 in words is "four hundred ninety-three million, four hundred ninety-seven thousand, eight hundred eighteen".