810928630189 has 2 divisors, whose sum is σ = 810928630190. Its totient is φ = 810928630188.

The previous prime is 810928630181. The next prime is 810928630223. The reversal of 810928630189 is 981036829018.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 539992764964 + 270935865225 = 734842^2 + 520515^2 .

It is a cyclic number.

It is not a de Polignac number, because 810928630189 - 2³ = 810928630181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (810928630181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 405464315094 + 405464315095.

It is an arithmetic number, because the mean of its divisors is an integer number (405464315095).

Almost surely, 2^810928630189 is an apocalyptic number.

It is an amenable number.

810928630189 is a deficient number, since it is larger than the sum of its proper divisors (1).

810928630189 is an equidigital number, since it uses as much as digits as its factorization.

810928630189 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1492992, while the sum is 55.

The spelling of 810928630189 in words is "eight hundred ten billion, nine hundred twenty-eight million, six hundred thirty thousand, one hundred eighty-nine".