491841000 has 384 divisors, whose sum is σ = 1960508160. Its totient is φ = 108864000.

The previous prime is 491840983. The next prime is 491841017. The reversal of 491841000 is 148194.

It is an interprime number because it is at equal distance from previous prime (491840983) and next prime (491841017).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2330895 + ... + 2331105.

It is an arithmetic number, because the mean of its divisors is an integer number (5105490).

Almost surely, 2^491841000 is an apocalyptic number.

491841000 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 491841000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (980254080).

491841000 is an abundant number, since it is smaller than the sum of its proper divisors (1468667160).

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

491841000 is a wasteful number, since it uses less digits than its factorization.

491841000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282 (or 265 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 491841000 is about 22177.4885864022. The cubic root of 491841000 is about 789.3596263295.

Adding to 491841000 its reverse (148194), we get a palindrome (491989194).

The spelling of 491841000 in words is "four hundred ninety-one million, eight hundred forty-one thousand".