8901281161 has 2 divisors, whose sum is σ = 8901281162. Its totient is φ = 8901281160.

The previous prime is 8901281159. The next prime is 8901281173. The reversal of 8901281161 is 1611821098.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6867271161 + 2034010000 = 82869^2 + 45100^2 .

It is a cyclic number.

It is not a de Polignac number, because 8901281161 - 2¹ = 8901281159 is a prime.

Together with 8901281159, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 8901281161.

It is not a weakly prime, because it can be changed into another prime (8901281761) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4450640580 + 4450640581.

It is an arithmetic number, because the mean of its divisors is an integer number (4450640581).

Almost surely, 2^8901281161 is an apocalyptic number.

It is an amenable number.

8901281161 is a deficient number, since it is larger than the sum of its proper divisors (1).

8901281161 is an equidigital number, since it uses as much as digits as its factorization.

8901281161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 37.

The square root of 8901281161 is about 94346.6012159421. The cubic root of 8901281161 is about 2072.4505320674.

The spelling of 8901281161 in words is "eight billion, nine hundred one million, two hundred eighty-one thousand, one hundred sixty-one".