494780489808 has 160 divisors (see below), whose sum is σ = 1432588308480. Its totient is φ = 145863482880.

The previous prime is 494780489783. The next prime is 494780489813. The reversal of 494780489808 is 808984087494.

It is a Smith number, since the sum of its digits (69) coincides with the sum of the digits of its prime factors.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 4084578 + ... + 4203966.

It is an arithmetic number, because the mean of its divisors is an integer number (8953676928).

Almost surely, 2^494780489808 is an apocalyptic number.

494780489808 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 494780489808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (716294154240).

494780489808 is an abundant number, since it is smaller than the sum of its proper divisors (937807818672).

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

494780489808 is a wasteful number, since it uses less digits than its factorization.

494780489808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119625 (or 119619 counting only the distinct ones).

The product of its (nonzero) digits is 148635648, while the sum is 69.

The spelling of 494780489808 in words is "four hundred ninety-four billion, seven hundred eighty million, four hundred eighty-nine thousand, eight hundred eight".