491332608 has 176 divisors, whose sum is σ = 1568165760. Its totient is φ = 151068672.

The previous prime is 491332603. The next prime is 491332619. The reversal of 491332608 is 806233194.

491332608 is a `hidden beast` number, since 4 + 9 + 13 + 32 + 608 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (491332603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 358741 + ... + 360107.

Almost surely, 2^491332608 is an apocalyptic number.

491332608 is a gapful number since it is divisible by the number (48) 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 491332608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (784082880).

491332608 is an abundant number, since it is smaller than the sum of its proper divisors (1076833152).

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

491332608 is a wasteful number, since it uses less digits than its factorization.

491332608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1409 (or 1385 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 491332608 is about 22166.0237300243. The cubic root of 491332608 is about 789.0875584132.

The spelling of 491332608 in words is "four hundred ninety-one million, three hundred thirty-two thousand, six hundred eight".