492491961 has 32 divisors (see below), whose sum is σ = 787248000. Its totient is φ = 302491584.

The previous prime is 492491957. The next prime is 492491969. The reversal of 492491961 is 169194294.

It is not a de Polignac number, because 492491961 - 2² = 492491957 is a prime.

It is not an unprimeable number, because it can be changed into a prime (492491969) 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, 247870 + ... + 249848.

It is an arithmetic number, because the mean of its divisors is an integer number (24601500).

Almost surely, 2^492491961 is an apocalyptic number.

It is an amenable number.

492491961 is a deficient number, since it is larger than the sum of its proper divisors (294756039).

492491961 is a wasteful number, since it uses less digits than its factorization.

492491961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2710 (or 2704 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 492491961 is about 22192.1598993879. The cubic root of 492491961 is about 789.7077170098.

The spelling of 492491961 in words is "four hundred ninety-two million, four hundred ninety-one thousand, nine hundred sixty-one".