491288368 has 40 divisors (see below), whose sum is σ = 998453952. Its totient is φ = 233906688.

The previous prime is 491288359. The next prime is 491288387. The reversal of 491288368 is 863882194.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18996 + ... + 36652.

Almost surely, 2^491288368 is an apocalyptic number.

It is an amenable number.

491288368 is an abundant number, since it is smaller than the sum of its proper divisors (507165584).

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

491288368 is a wasteful number, since it uses less digits than its factorization.

491288368 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17749 (or 17743 counting only the distinct ones).

The product of its digits is 663552, while the sum is 49.

The square root of 491288368 is about 22165.0257838785. The cubic root of 491288368 is about 789.0638743338.

The spelling of 491288368 in words is "four hundred ninety-one million, two hundred eighty-eight thousand, three hundred sixty-eight".