9121329157 has 2 divisors, whose sum is σ = 9121329158. Its totient is φ = 9121329156.

The previous prime is 9121329149. The next prime is 9121329229. The reversal of 9121329157 is 7519231219.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8850858241 + 270470916 = 94079^2 + 16446^2 .

It is a cyclic number.

It is not a de Polignac number, because 9121329157 - 2³ = 9121329149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9121329757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4560664578 + 4560664579.

It is an arithmetic number, because the mean of its divisors is an integer number (4560664579).

Almost surely, 2^9121329157 is an apocalyptic number.

It is an amenable number.

9121329157 is a deficient number, since it is larger than the sum of its proper divisors (1).

9121329157 is an equidigital number, since it uses as much as digits as its factorization.

9121329157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 34020, while the sum is 40.

The square root of 9121329157 is about 95505.6498695234. The cubic root of 9121329157 is about 2089.3893469443.

The spelling of 9121329157 in words is "nine billion, one hundred twenty-one million, three hundred twenty-nine thousand, one hundred fifty-seven".