9818008157 has 2 divisors, whose sum is σ = 9818008158. Its totient is φ = 9818008156.

The previous prime is 9818008139. The next prime is 9818008219. The reversal of 9818008157 is 7518008189.

9818008157 is digitally balanced in base 2, 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., 8138565796 + 1679442361 = 90214^2 + 40981^2 .

It is a cyclic number.

It is not a de Polignac number, because 9818008157 - 2⁶ = 9818008093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9818008117) 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, 4909004078 + 4909004079.

It is an arithmetic number, because the mean of its divisors is an integer number (4909004079).

Almost surely, 2^9818008157 is an apocalyptic number.

It is an amenable number.

9818008157 is a deficient number, since it is larger than the sum of its proper divisors (1).

9818008157 is an equidigital number, since it uses as much as digits as its factorization.

9818008157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 161280, while the sum is 47.

The square root of 9818008157 is about 99085.8625485997. The cubic root of 9818008157 is about 2141.2849415508.

The spelling of 9818008157 in words is "nine billion, eight hundred eighteen million, eight thousand, one hundred fifty-seven".