491080194 has 72 divisors (see below), whose sum is σ = 1231186320. Its totient is φ = 140968080.

The previous prime is 491080159. The next prime is 491080211.

491080194 is a `hidden beast` number, since 491 + 0 + 80 + 1 + 94 = 666.

491080194 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 35449 + ... + 47315.

It is an arithmetic number, because the mean of its divisors is an integer number (17099810).

Almost surely, 2^491080194 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 491080194, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (615593160).

491080194 is an abundant number, since it is smaller than the sum of its proper divisors (740106126).

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

491080194 is a wasteful number, since it uses less digits than its factorization.

491080194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11916 (or 11902 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 491080194 is about 22160.3292845571. The cubic root of 491080194 is about 788.9524083733.

The spelling of 491080194 in words is "four hundred ninety-one million, eighty thousand, one hundred ninety-four".