810425923 has 2 divisors, whose sum is σ = 810425924. Its totient is φ = 810425922.

The previous prime is 810425807. The next prime is 810425929. The reversal of 810425923 is 329524018.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 810425923 - 2²¹ = 808328771 is a prime.

It is not a weakly prime, because it can be changed into another prime (810425929) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 405212961 + 405212962.

It is an arithmetic number, because the mean of its divisors is an integer number (405212962).

Almost surely, 2^810425923 is an apocalyptic number.

810425923 is a deficient number, since it is larger than the sum of its proper divisors (1).

810425923 is an equidigital number, since it uses as much as digits as its factorization.

810425923 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 810425923 is about 28467.9806624917. The cubic root of 810425923 is about 932.3331110318. Note that the first 3 decimals are identical.

The spelling of 810425923 in words is "eight hundred ten million, four hundred twenty-five thousand, nine hundred twenty-three".