492305861 has 2 divisors, whose sum is σ = 492305862. Its totient is φ = 492305860.

The previous prime is 492305851. The next prime is 492305867. The reversal of 492305861 is 168503294.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 456676900 + 35628961 = 21370^2 + 5969^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-492305861 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (492305867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246152930 + 246152931.

It is an arithmetic number, because the mean of its divisors is an integer number (246152931).

Almost surely, 2^492305861 is an apocalyptic number.

It is an amenable number.

492305861 is a deficient number, since it is larger than the sum of its proper divisors (1).

492305861 is an equidigital number, since it uses as much as digits as its factorization.

492305861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51840, while the sum is 38.

The square root of 492305861 is about 22187.9665810096. The cubic root of 492305861 is about 789.6082344239.

The spelling of 492305861 in words is "four hundred ninety-two million, three hundred five thousand, eight hundred sixty-one".