491795874 has 40 divisors (see below), whose sum is σ = 1125451008. Its totient is φ = 160441560.

The previous prime is 491795869. The next prime is 491795881. The reversal of 491795874 is 478597194.

491795874 is a `hidden beast` number, since 49 + 17 + 9 + 587 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 491795874.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 24682 + ... + 39909.

Almost surely, 2^491795874 is an apocalyptic number.

491795874 is an abundant number, since it is smaller than the sum of its proper divisors (633655134).

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

491795874 is a wasteful number, since it uses less digits than its factorization.

491795874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64652 (or 64643 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 54.

The square root of 491795874 is about 22176.4711800593. The cubic root of 491795874 is about 789.3354845628.

The spelling of 491795874 in words is "four hundred ninety-one million, seven hundred ninety-five thousand, eight hundred seventy-four".