491453508 has 96 divisors (see below), whose sum is σ = 1416029440. Its totient is φ = 129185280.

The previous prime is 491453483. The next prime is 491453513. The reversal of 491453508 is 805354194.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 459198 + ... + 460266.

Almost surely, 2^491453508 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 491453508, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (708014720).

491453508 is an abundant number, since it is smaller than the sum of its proper divisors (924575932).

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

491453508 is a wasteful number, since it uses less digits than its factorization.

491453508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1517 (or 1515 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 39.

The square root of 491453508 is about 22168.7507090499. The cubic root of 491453508 is about 789.1522755114.

The spelling of 491453508 in words is "four hundred ninety-one million, four hundred fifty-three thousand, five hundred eight".