492518691 has 32 divisors (see below), whose sum is σ = 854246400. Its totient is φ = 274570560.

The previous prime is 492518671. The next prime is 492518701. The reversal of 492518691 is 196815294.

492518691 is a `hidden beast` number, since 49 + 2 + 518 + 6 + 91 = 666.

It is not a de Polignac number, because 492518691 - 2⁵ = 492518659 is a prime.

It is not an unprimeable number, because it can be changed into a prime (492518671) 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 31 ways as a sum of consecutive naturals, for example, 24031 + ... + 39528.

It is an arithmetic number, because the mean of its divisors is an integer number (26695200).

Almost surely, 2^492518691 is an apocalyptic number.

492518691 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

492518691 is a deficient number, since it is larger than the sum of its proper divisors (361727709).

492518691 is a wasteful number, since it uses less digits than its factorization.

492518691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63616 (or 63610 counting only the distinct ones).

The product of its digits is 155520, while the sum is 45.

The square root of 492518691 is about 22192.7621309291. The cubic root of 492518691 is about 789.7220038795.

The spelling of 492518691 in words is "four hundred ninety-two million, five hundred eighteen thousand, six hundred ninety-one".