809228630893 has 2 divisors, whose sum is σ = 809228630894. Its totient is φ = 809228630892.

The previous prime is 809228630879. The next prime is 809228630957. The reversal of 809228630893 is 398036822908.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 509229241609 + 299999389284 = 713603^2 + 547722^2 .

It is a cyclic number.

It is not a de Polignac number, because 809228630893 - 2¹³ = 809228622701 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (809228630813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 404614315446 + 404614315447.

It is an arithmetic number, because the mean of its divisors is an integer number (404614315447).

Almost surely, 2^809228630893 is an apocalyptic number.

It is an amenable number.

809228630893 is a deficient number, since it is larger than the sum of its proper divisors (1).

809228630893 is an equidigital number, since it uses as much as digits as its factorization.

809228630893 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8957952, while the sum is 58.

The spelling of 809228630893 in words is "eight hundred nine billion, two hundred twenty-eight million, six hundred thirty thousand, eight hundred ninety-three".