810161930 has 16 divisors (see below), whose sum is σ = 1465206624. Its totient is φ = 322528080.

The previous prime is 810161873. The next prime is 810161939. The reversal of 810161930 is 39161018.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 810161893 and 810161902.

It is not an unprimeable number, because it can be changed into a prime (810161939) 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 7 ways as a sum of consecutive naturals, for example, 189872 + ... + 194091.

It is an arithmetic number, because the mean of its divisors is an integer number (91575414).

Almost surely, 2^810161930 is an apocalyptic number.

810161930 is a deficient number, since it is larger than the sum of its proper divisors (655044694).

810161930 is a wasteful number, since it uses less digits than its factorization.

810161930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 384181.

The product of its (nonzero) digits is 1296, while the sum is 29.

The square root of 810161930 is about 28463.3436194696. The cubic root of 810161930 is about 932.2318654447.

The spelling of 810161930 in words is "eight hundred ten million, one hundred sixty-one thousand, nine hundred thirty".