9801330157 has 2 divisors, whose sum is σ = 9801330158. Its totient is φ = 9801330156.

The previous prime is 9801330089. The next prime is 9801330163. The reversal of 9801330157 is 7510331089.

It is a happy number.

9801330157 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., 7222620196 + 2578709961 = 84986^2 + 50781^2 .

It is an emirp because it is prime and its reverse (7510331089) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-9801330157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9801330167) 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, 4900665078 + 4900665079.

It is an arithmetic number, because the mean of its divisors is an integer number (4900665079).

Almost surely, 2^9801330157 is an apocalyptic number.

It is an amenable number.

9801330157 is a deficient number, since it is larger than the sum of its proper divisors (1).

9801330157 is an equidigital number, since it uses as much as digits as its factorization.

9801330157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 9801330157 is about 99001.6674455537. The cubic root of 9801330157 is about 2140.0717765689.

The spelling of 9801330157 in words is "nine billion, eight hundred one million, three hundred thirty thousand, one hundred fifty-seven".