809693536 has 12 divisors (see below), whose sum is σ = 1594084212. Its totient is φ = 404846752.

The previous prime is 809693509. The next prime is 809693567. The reversal of 809693536 is 635396908.

It is a self number, because there is not a number n which added to its sum of digits gives 809693536.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 12651430 + ... + 12651493.

It is an arithmetic number, because the mean of its divisors is an integer number (132840351).

Almost surely, 2^809693536 is an apocalyptic number.

It is an amenable number.

809693536 is a deficient number, since it is larger than the sum of its proper divisors (784390676).

809693536 is a wasteful number, since it uses less digits than its factorization.

809693536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25302933 (or 25302925 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 49.

The square root of 809693536 is about 28455.1144084855. The cubic root of 809693536 is about 932.0521746228.

The spelling of 809693536 in words is "eight hundred nine million, six hundred ninety-three thousand, five hundred thirty-six".