8133966289 has 2 divisors, whose sum is σ = 8133966290. Its totient is φ = 8133966288.

The previous prime is 8133966259. The next prime is 8133966359. The reversal of 8133966289 is 9826693318.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6231523600 + 1902442689 = 78940^2 + 43617^2 .

It is a cyclic number.

It is not a de Polignac number, because 8133966289 - 2⁵ = 8133966257 is a prime.

It is a super-2 number, since 2×8133966289² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (8133966229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4066983144 + 4066983145.

It is an arithmetic number, because the mean of its divisors is an integer number (4066983145).

Almost surely, 2^8133966289 is an apocalyptic number.

It is an amenable number.

8133966289 is a deficient number, since it is larger than the sum of its proper divisors (1).

8133966289 is an equidigital number, since it uses as much as digits as its factorization.

8133966289 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3359232, while the sum is 55.

The square root of 8133966289 is about 90188.5041953796. The cubic root of 8133966289 is about 2011.1021149046.

The spelling of 8133966289 in words is "eight billion, one hundred thirty-three million, nine hundred sixty-six thousand, two hundred eighty-nine".