491983184194 has 32 divisors (see below), whose sum is σ = 772161465600. Its totient is φ = 234791356800.

The previous prime is 491983184191. The next prime is 491983184237. The reversal of 491983184194 is 491481389194.

It is not an unprimeable number, because it can be changed into a prime (491983184191) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41037069 + ... + 41049055.

It is an arithmetic number, because the mean of its divisors is an integer number (24130045800).

Almost surely, 2^491983184194 is an apocalyptic number.

491983184194 is a deficient number, since it is larger than the sum of its proper divisors (280178281406).

491983184194 is a wasteful number, since it uses less digits than its factorization.

491983184194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20058.

The product of its digits is 8957952, while the sum is 61.

The spelling of 491983184194 in words is "four hundred ninety-one billion, nine hundred eighty-three million, one hundred eighty-four thousand, one hundred ninety-four".