491949194 has 16 divisors (see below), whose sum is σ = 805368960. Its totient is φ = 223512960.

The previous prime is 491949173. The next prime is 491949251.

491949194 is nontrivially palindromic in base 10.

It is a Curzon 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 7 ways as a sum of consecutive naturals, for example, 70202 + ... + 76890.

It is an arithmetic number, because the mean of its divisors is an integer number (50335560).

Almost surely, 2^491949194 is an apocalyptic number.

491949194 is a deficient number, since it is larger than the sum of its proper divisors (313419766).

491949194 is a wasteful number, since it uses less digits than its factorization.

491949194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10045.

The product of its digits is 419904, while the sum is 50.

The square root of 491949194 is about 22179.9277275648. The cubic root of 491949194 is about 789.4175025631.

The spelling of 491949194 in words is "four hundred ninety-one million, nine hundred forty-nine thousand, one hundred ninety-four".