491000245 has 8 divisors (see below), whose sum is σ = 590330016. Its totient is φ = 392047056.

The previous prime is 491000243. The next prime is 491000267. The reversal of 491000245 is 542000194.

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 491000245 - 2¹ = 491000243 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 (491000243) by changing a digit.

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, 91267 + ... + 96496.

It is an arithmetic number, because the mean of its divisors is an integer number (73791252).

Almost surely, 2^491000245 is an apocalyptic number.

It is an amenable number.

491000245 is a deficient number, since it is larger than the sum of its proper divisors (99329771).

491000245 is a wasteful number, since it uses less digits than its factorization.

491000245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188291.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 491000245 is about 22158.5253345073. The cubic root of 491000245 is about 788.9095916195.

The spelling of 491000245 in words is "four hundred ninety-one million, two hundred forty-five", and thus it is an aban number.