492164681 has 2 divisors, whose sum is σ = 492164682. Its totient is φ = 492164680.

The previous prime is 492164677. The next prime is 492164689. The reversal of 492164681 is 186461294.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 444830281 + 47334400 = 21091^2 + 6880^2 .

It is a cyclic number.

It is not a de Polignac number, because 492164681 - 2² = 492164677 is a prime.

It is a super-4 number, since 4×492164681⁴ (a number of 36 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (492164689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246082340 + 246082341.

It is an arithmetic number, because the mean of its divisors is an integer number (246082341).

Almost surely, 2^492164681 is an apocalyptic number.

It is an amenable number.

492164681 is a deficient number, since it is larger than the sum of its proper divisors (1).

492164681 is an equidigital number, since it uses as much as digits as its factorization.

492164681 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 41.

The square root of 492164681 is about 22184.7848986642. The cubic root of 492164681 is about 789.5327477822.

The spelling of 492164681 in words is "four hundred ninety-two million, one hundred sixty-four thousand, six hundred eighty-one".