491176216 has 8 divisors (see below), whose sum is σ = 920955420. Its totient is φ = 245588104.

The previous prime is 491176211. The next prime is 491176241. The reversal of 491176216 is 612671194.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491176211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30698506 + ... + 30698521.

Almost surely, 2^491176216 is an apocalyptic number.

It is an amenable number.

491176216 is a deficient number, since it is larger than the sum of its proper divisors (429779204).

491176216 is a wasteful number, since it uses less digits than its factorization.

491176216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61397033 (or 61397029 counting only the distinct ones).

The product of its digits is 18144, while the sum is 37.

The square root of 491176216 is about 22162.4957078394. The cubic root of 491176216 is about 789.0038268938.

The spelling of 491176216 in words is "four hundred ninety-one million, one hundred seventy-six thousand, two hundred sixteen".