809730650 has 48 divisors (see below), whose sum is σ = 1528214688. Its totient is φ = 319176000.

The previous prime is 809730643. The next prime is 809730659. The reversal of 809730650 is 56037908.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (809730659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1185209 + ... + 1185891.

It is an arithmetic number, because the mean of its divisors is an integer number (31837806).

Almost surely, 2^809730650 is an apocalyptic number.

809730650 is a deficient number, since it is larger than the sum of its proper divisors (718484038).

809730650 is a wasteful number, since it uses less digits than its factorization.

809730650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1007 (or 1002 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 809730650 is about 28455.7665509120. The cubic root of 809730650 is about 932.0664152601.

The spelling of 809730650 in words is "eight hundred nine million, seven hundred thirty thousand, six hundred fifty".