9816226129 has 2 divisors, whose sum is σ = 9816226130. Its totient is φ = 9816226128.

The previous prime is 9816226127. The next prime is 9816226141. The reversal of 9816226129 is 9216226189.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9633029904 + 183196225 = 98148^2 + 13535^2 .

It is a cyclic number.

It is not a de Polignac number, because 9816226129 - 2¹ = 9816226127 is a prime.

Together with 9816226127, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (9816226127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4908113064 + 4908113065.

It is an arithmetic number, because the mean of its divisors is an integer number (4908113065).

Almost surely, 2^9816226129 is an apocalyptic number.

It is an amenable number.

9816226129 is a deficient number, since it is larger than the sum of its proper divisors (1).

9816226129 is an equidigital number, since it uses as much as digits as its factorization.

9816226129 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 46.

The square root of 9816226129 is about 99076.8697981522. The cubic root of 9816226129 is about 2141.1553816459.

The spelling of 9816226129 in words is "nine billion, eight hundred sixteen million, two hundred twenty-six thousand, one hundred twenty-nine".