491161194 has 48 divisors (see below), whose sum is σ = 1092405600. Its totient is φ = 159431328.

The previous prime is 491161163. The next prime is 491161201.

491161194 is a `hidden beast` number, since 491 + 161 + 1 + 9 + 4 = 666.

491161194 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 113637 + ... + 117879.

It is an arithmetic number, because the mean of its divisors is an integer number (22758450).

Almost surely, 2^491161194 is an apocalyptic number.

491161194 is an abundant number, since it is smaller than the sum of its proper divisors (601244406).

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

491161194 is a wasteful number, since it uses less digits than its factorization.

491161194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4419 (or 4416 counting only the distinct ones).

The product of its digits is 7776, while the sum is 36.

The square root of 491161194 is about 22162.1567993731. The cubic root of 491161194 is about 788.9957832522.

The spelling of 491161194 in words is "four hundred ninety-one million, one hundred sixty-one thousand, one hundred ninety-four".