491596854 has 32 divisors (see below), whose sum is σ = 1189748736. Its totient is φ = 132193920.

The previous prime is 491596849. The next prime is 491596877. The reversal of 491596854 is 458695194.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a junction number, because it is equal to n+sod(n) for n = 491596797 and 491596806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 343542 + ... + 344969.

It is an arithmetic number, because the mean of its divisors is an integer number (37179648).

Almost surely, 2^491596854 is an apocalyptic number.

491596854 is an abundant number, since it is smaller than the sum of its proper divisors (698151882).

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

491596854 is a wasteful number, since it uses less digits than its factorization.

491596854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688540.

The product of its digits is 1555200, while the sum is 51.

The square root of 491596854 is about 22171.9835377893. The cubic root of 491596854 is about 789.2289940776.

The spelling of 491596854 in words is "four hundred ninety-one million, five hundred ninety-six thousand, eight hundred fifty-four".