492172681 has 32 divisors (see below), whose sum is σ = 673360128. Its totient is φ = 347293440.

The previous prime is 492172679. The next prime is 492172691. The reversal of 492172681 is 186271294.

It is not a de Polignac number, because 492172681 - 2¹ = 492172679 is a prime.

It is a super-2 number, since 2×492172681² = 484467895845455522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (492172621) 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, 48415 + ... + 57691.

It is an arithmetic number, because the mean of its divisors is an integer number (21042504).

Almost surely, 2^492172681 is an apocalyptic number.

It is an amenable number.

492172681 is a deficient number, since it is larger than the sum of its proper divisors (181187447).

492172681 is a wasteful number, since it uses less digits than its factorization.

492172681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9361.

The product of its digits is 48384, while the sum is 40.

The square root of 492172681 is about 22184.9652016856. The cubic root of 492172681 is about 789.5370256374.

The spelling of 492172681 in words is "four hundred ninety-two million, one hundred seventy-two thousand, six hundred eighty-one".