9915368129 has 2 divisors, whose sum is σ = 9915368130. Its totient is φ = 9915368128.

The previous prime is 9915368119. The next prime is 9915368231. The reversal of 9915368129 is 9218635199.

It is a happy number.

9915368129 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7720258225 + 2195109904 = 87865^2 + 46852^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9915368129 is a prime.

It is not a weakly prime, because it can be changed into another prime (9915368119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4957684064 + 4957684065.

It is an arithmetic number, because the mean of its divisors is an integer number (4957684065).

Almost surely, 2^9915368129 is an apocalyptic number.

It is an amenable number.

9915368129 is a deficient number, since it is larger than the sum of its proper divisors (1).

9915368129 is an equidigital number, since it uses as much as digits as its factorization.

9915368129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1049760, while the sum is 53.

The square root of 9915368129 is about 99575.9415170150. The cubic root of 9915368129 is about 2148.3396684952.

The spelling of 9915368129 in words is "nine billion, nine hundred fifteen million, three hundred sixty-eight thousand, one hundred twenty-nine".