491487784194 has 48 divisors (see below), whose sum is σ = 1080561394080. Its totient is φ = 148921819200.

The previous prime is 491487784187. The next prime is 491487784213.

491487784194 is nontrivially palindromic in base 10.

491487784194 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9936777 + ... + 9986115.

It is an arithmetic number, because the mean of its divisors is an integer number (22511695710).

Almost surely, 2^491487784194 is an apocalyptic number.

491487784194 is an abundant number, since it is smaller than the sum of its proper divisors (589073609886).

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

491487784194 is a wasteful number, since it uses less digits than its factorization.

491487784194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63087 (or 63076 counting only the distinct ones).

The product of its digits is 65028096, while the sum is 66.

The spelling of 491487784194 in words is "four hundred ninety-one billion, four hundred eighty-seven million, seven hundred eighty-four thousand, one hundred ninety-four".