493643808 has 168 divisors, whose sum is σ = 1665836928. Its totient is φ = 140994432.

The previous prime is 493643803. The next prime is 493643837. The reversal of 493643808 is 808346394.

It is a tau number, because it is divible by the number of its divisors (168).

It is not an unprimeable number, because it can be changed into a prime (493643803) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 161785 + ... + 164807.

It is an arithmetic number, because the mean of its divisors is an integer number (9915696).

Almost surely, 2^493643808 is an apocalyptic number.

493643808 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 493643808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (832918464).

493643808 is an abundant number, since it is smaller than the sum of its proper divisors (1172193120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

493643808 is an equidigital number, since it uses as much as digits as its factorization.

493643808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3058 (or 3035 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 45.

The square root of 493643808 is about 22218.0964081084. The cubic root of 493643808 is about 790.3228974329.

The spelling of 493643808 in words is "four hundred ninety-three million, six hundred forty-three thousand, eight hundred eight".