491472194 has 8 divisors (see below), whose sum is σ = 737357628. Its totient is φ = 245686320.

The previous prime is 491472187. The next prime is 491472209. The reversal of 491472194 is 491274194.

It can be written as a sum of positive squares in 2 ways, for example, as 329241025 + 162231169 = 18145^2 + 12737^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 10997 + ... + 33224.

Almost surely, 2^491472194 is an apocalyptic number.

491472194 is a deficient number, since it is larger than the sum of its proper divisors (245885434).

491472194 is a wasteful number, since it uses less digits than its factorization.

491472194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49780.

The product of its digits is 72576, while the sum is 41.

The square root of 491472194 is about 22169.1721541423. The cubic root of 491472194 is about 789.1622770763.

The spelling of 491472194 in words is "four hundred ninety-one million, four hundred seventy-two thousand, one hundred ninety-four".