9903536261 has 2 divisors, whose sum is σ = 9903536262. Its totient is φ = 9903536260.

The previous prime is 9903536243. The next prime is 9903536267. The reversal of 9903536261 is 1626353099.

9903536261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7397032036 + 2506504225 = 86006^2 + 50065^2 .

It is a cyclic number.

It is not a de Polignac number, because 9903536261 - 2⁶ = 9903536197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9903536267) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4951768130 + 4951768131.

It is an arithmetic number, because the mean of its divisors is an integer number (4951768131).

Almost surely, 2^9903536261 is an apocalyptic number.

It is an amenable number.

9903536261 is a deficient number, since it is larger than the sum of its proper divisors (1).

9903536261 is an equidigital number, since it uses as much as digits as its factorization.

9903536261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 262440, while the sum is 44.

The square root of 9903536261 is about 99516.5125042071. The cubic root of 9903536261 is about 2147.4848006304.

The spelling of 9903536261 in words is "nine billion, nine hundred three million, five hundred thirty-six thousand, two hundred sixty-one".