492019309 has 2 divisors, whose sum is σ = 492019310. Its totient is φ = 492019308.

The previous prime is 492019271. The next prime is 492019313. The reversal of 492019309 is 903910294.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 410062500 + 81956809 = 20250^2 + 9053^2 .

It is a cyclic number.

It is not a de Polignac number, because 492019309 - 2⁹ = 492018797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (492019399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 246009654 + 246009655.

It is an arithmetic number, because the mean of its divisors is an integer number (246009655).

Almost surely, 2^492019309 is an apocalyptic number.

It is an amenable number.

492019309 is a deficient number, since it is larger than the sum of its proper divisors (1).

492019309 is an equidigital number, since it uses as much as digits as its factorization.

492019309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 492019309 is about 22181.5082670228. The cubic root of 492019309 is about 789.4550046599.

The spelling of 492019309 in words is "four hundred ninety-two million, nineteen thousand, three hundred nine".