809161946 has 8 divisors (see below), whose sum is σ = 1215361344. Its totient is φ = 404041500.

The previous prime is 809161943. The next prime is 809161961. The reversal of 809161946 is 649161908.

809161946 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 809161897 and 809161906.

It is not an unprimeable number, because it can be changed into a prime (809161943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 267860 + ... + 270863.

It is an arithmetic number, because the mean of its divisors is an integer number (151920168).

Almost surely, 2^809161946 is an apocalyptic number.

809161946 is a deficient number, since it is larger than the sum of its proper divisors (406199398).

809161946 is a wasteful number, since it uses less digits than its factorization.

809161946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539476.

The product of its (nonzero) digits is 93312, while the sum is 44.

The square root of 809161946 is about 28445.7720232726. The cubic root of 809161946 is about 931.8481558331.

The spelling of 809161946 in words is "eight hundred nine million, one hundred sixty-one thousand, nine hundred forty-six".