491762718 has 16 divisors (see below), whose sum is σ = 1092806160. Its totient is φ = 163920888.

The previous prime is 491762717. The next prime is 491762737. The reversal of 491762718 is 817267194.

It is a happy number.

491762718 is a `hidden beast` number, since 4 + 9 + 1 + 7 + 627 + 18 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491762717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4553305 + ... + 4553412.

It is an arithmetic number, because the mean of its divisors is an integer number (68300385).

Almost surely, 2^491762718 is an apocalyptic number.

491762718 is an abundant number, since it is smaller than the sum of its proper divisors (601043442).

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

491762718 is a wasteful number, since it uses less digits than its factorization.

491762718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9106728 (or 9106722 counting only the distinct ones).

The product of its digits is 169344, while the sum is 45.

The square root of 491762718 is about 22175.7236184076. The cubic root of 491762718 is about 789.3177456344.

The spelling of 491762718 in words is "four hundred ninety-one million, seven hundred sixty-two thousand, seven hundred eighteen".