810732945 has 32 divisors (see below), whose sum is σ = 1489582080. Its totient is φ = 372392640.

The previous prime is 810732943. The next prime is 810733013. The reversal of 810732945 is 549237018.

It is not a de Polignac number, because 810732945 - 2¹ = 810732943 is a prime.

It is not an unprimeable number, because it can be changed into a prime (810732943) 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 in 31 ways as a sum of consecutive naturals, for example, 126169 + ... + 132438.

It is an arithmetic number, because the mean of its divisors is an integer number (46549440).

Almost surely, 2^810732945 is an apocalyptic number.

It is an amenable number.

810732945 is a deficient number, since it is larger than the sum of its proper divisors (678849135).

810732945 is a wasteful number, since it uses less digits than its factorization.

810732945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258645.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 810732945 is about 28473.3725610438. The cubic root of 810732945 is about 932.4508312859.

The spelling of 810732945 in words is "eight hundred ten million, seven hundred thirty-two thousand, nine hundred forty-five".