491678184 has 32 divisors (see below), whose sum is σ = 1229965920. Its totient is φ = 163790016.

The previous prime is 491678183. The next prime is 491678203. The reversal of 491678184 is 481876194.

It is not an unprimeable number, because it can be changed into a prime (491678183) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39322 + ... + 50294.

It is an arithmetic number, because the mean of its divisors is an integer number (38436435).

Almost surely, 2^491678184 is an apocalyptic number.

It is an amenable number.

491678184 is an abundant number, since it is smaller than the sum of its proper divisors (738287736).

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

491678184 is a wasteful number, since it uses less digits than its factorization.

491678184 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12849 (or 12845 counting only the distinct ones).

The product of its digits is 387072, while the sum is 48.

The square root of 491678184 is about 22173.8175332981. The cubic root of 491678184 is about 789.2725151418.

The spelling of 491678184 in words is "four hundred ninety-one million, six hundred seventy-eight thousand, one hundred eighty-four".