493841978 has 8 divisors (see below), whose sum is σ = 846586272. Its totient is φ = 211646556.

The previous prime is 493841963. The next prime is 493841981. The reversal of 493841978 is 879148394.

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

It is an unprimeable number.

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, 17637200 + ... + 17637227.

It is an arithmetic number, because the mean of its divisors is an integer number (105823284).

Almost surely, 2^493841978 is an apocalyptic number.

493841978 is a deficient number, since it is larger than the sum of its proper divisors (352744294).

493841978 is a wasteful number, since it uses less digits than its factorization.

493841978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35274436.

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

The square root of 493841978 is about 22222.5556136102. Note that the first 3 decimals coincide. The cubic root of 493841978 is about 790.4286398953.

The spelling of 493841978 in words is "four hundred ninety-three million, eight hundred forty-one thousand, nine hundred seventy-eight".