491654511 has 6 divisors (see below), whose sum is σ = 710167640. Its totient is φ = 327769668.

The previous prime is 491654497. The next prime is 491654531. The reversal of 491654511 is 115456194.

491654511 is a `hidden beast` number, since 4 + 91 + 6 + 54 + 511 = 666.

It is not a de Polignac number, because 491654511 - 2¹⁴ = 491638127 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491654531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27314131 + ... + 27314148.

Almost surely, 2^491654511 is an apocalyptic number.

491654511 is a deficient number, since it is larger than the sum of its proper divisors (218513129).

491654511 is a wasteful number, since it uses less digits than its factorization.

491654511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54628285 (or 54628282 counting only the distinct ones).

The product of its digits is 21600, while the sum is 36.

The square root of 491654511 is about 22173.2837216322. The cubic root of 491654511 is about 789.2598478126.

The spelling of 491654511 in words is "four hundred ninety-one million, six hundred fifty-four thousand, five hundred eleven".