494687878 has 24 divisors (see below), whose sum is σ = 776931624. Its totient is φ = 236090400.

The previous prime is 494687873. The next prime is 494687881. The reversal of 494687878 is 878786494.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (494687873) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 179773 + ... + 182503.

It is an arithmetic number, because the mean of its divisors is an integer number (32372151).

Almost surely, 2^494687878 is an apocalyptic number.

494687878 is a deficient number, since it is larger than the sum of its proper divisors (282243746).

494687878 is a wasteful number, since it uses less digits than its factorization.

494687878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2868 (or 2821 counting only the distinct ones).

The product of its digits is 21676032, while the sum is 61.

The square root of 494687878 is about 22241.5799348877. The cubic root of 494687878 is about 790.8796898386.

The spelling of 494687878 in words is "four hundred ninety-four million, six hundred eighty-seven thousand, eight hundred seventy-eight".