491905350 has 144 divisors (see below), whose sum is σ = 1361430720. Its totient is φ = 127296000.

The previous prime is 491905339. The next prime is 491905369. The reversal of 491905350 is 53509194.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3590482 + ... + 3590618.

It is an arithmetic number, because the mean of its divisors is an integer number (9454380).

Almost surely, 2^491905350 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 491905350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (680715360).

491905350 is an abundant number, since it is smaller than the sum of its proper divisors (869525370).

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

491905350 is a wasteful number, since it uses less digits than its factorization.

491905350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335 (or 327 counting only the distinct ones).

The product of its (nonzero) digits is 24300, while the sum is 36.

The square root of 491905350 is about 22178.9393344226. The cubic root of 491905350 is about 789.3940501079.

The spelling of 491905350 in words is "four hundred ninety-one million, nine hundred five thousand, three hundred fifty".