494803972818 has 96 divisors (see below), whose sum is σ = 1127265564672. Its totient is φ = 156653481600.

The previous prime is 494803972781. The next prime is 494803972843. The reversal of 494803972818 is 818279308494.

494803972818 is a `hidden beast` number, since 4 + 9 + 480 + 3 + 9 + 72 + 81 + 8 = 666.

It is a super-2 number, since 2×494803972818² (a number of 24 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 15743896 + ... + 15775292.

It is an arithmetic number, because the mean of its divisors is an integer number (11742349632).

Almost surely, 2^494803972818 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 494803972818, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (563632782336).

494803972818 is an abundant number, since it is smaller than the sum of its proper divisors (632461591854).

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

494803972818 is a wasteful number, since it uses less digits than its factorization.

494803972818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31960 (or 31957 counting only the distinct ones).

The product of its (nonzero) digits is 27869184, while the sum is 63.

The spelling of 494803972818 in words is "four hundred ninety-four billion, eight hundred three million, nine hundred seventy-two thousand, eight hundred eighteen".