491350189 has 8 divisors (see below), whose sum is σ = 536201568. Its totient is φ = 446529360.

The previous prime is 491350187. The next prime is 491350229. The reversal of 491350189 is 981053194.

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

It is a cyclic number.

It is not a de Polignac number, because 491350189 - 2¹ = 491350187 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491350187) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37759 + ... + 49075.

It is an arithmetic number, because the mean of its divisors is an integer number (67025196).

Almost surely, 2^491350189 is an apocalyptic number.

It is an amenable number.

491350189 is a deficient number, since it is larger than the sum of its proper divisors (44851379).

491350189 is a wasteful number, since it uses less digits than its factorization.

491350189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15275.

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 491350189 is about 22166.4203018891. The cubic root of 491350189 is about 789.0969700844.

The spelling of 491350189 in words is "four hundred ninety-one million, three hundred fifty thousand, one hundred eighty-nine".