8203791161 has 2 divisors, whose sum is σ = 8203791162. Its totient is φ = 8203791160.

The previous prime is 8203791157. The next prime is 8203791191. The reversal of 8203791161 is 1611973028.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7016575225 + 1187215936 = 83765^2 + 34456^2 .

It is a cyclic number.

It is not a de Polignac number, because 8203791161 - 2² = 8203791157 is a prime.

It is not a weakly prime, because it can be changed into another prime (8203791191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4101895580 + 4101895581.

It is an arithmetic number, because the mean of its divisors is an integer number (4101895581).

Almost surely, 2^8203791161 is an apocalyptic number.

It is an amenable number.

8203791161 is a deficient number, since it is larger than the sum of its proper divisors (1).

8203791161 is an equidigital number, since it uses as much as digits as its factorization.

8203791161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 8203791161 is about 90574.7821471297. The cubic root of 8203791161 is about 2016.8403992334.

The spelling of 8203791161 in words is "eight billion, two hundred three million, seven hundred ninety-one thousand, one hundred sixty-one".