492791985 has 64 divisors (see below), whose sum is σ = 1004021760. Its totient is φ = 224648640.

The previous prime is 492791963. The next prime is 492791993. The reversal of 492791985 is 589197294.

492791985 is a `hidden beast` number, since 492 + 79 + 1 + 9 + 85 = 666.

It is not a de Polignac number, because 492791985 - 2⁵ = 492791953 is a prime.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 607230 + ... + 608040.

It is an arithmetic number, because the mean of its divisors is an integer number (15687840).

Almost surely, 2^492791985 is an apocalyptic number.

492791985 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

492791985 is an abundant number, since it is smaller than the sum of its proper divisors (511229775).

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

492791985 is a wasteful number, since it uses less digits than its factorization.

492791985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1475 (or 1469 counting only the distinct ones).

The product of its digits is 1632960, while the sum is 54.

The square root of 492791985 is about 22198.9185547405. The cubic root of 492791985 is about 789.8680466467.

The spelling of 492791985 in words is "four hundred ninety-two million, seven hundred ninety-one thousand, nine hundred eighty-five".