9801613191 has 4 divisors (see below), whose sum is σ = 13068817592. Its totient is φ = 6534408792.

The previous prime is 9801613181. The next prime is 9801613193. The reversal of 9801613191 is 1913161089.

9801613191 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 9801613191 - 2¹¹ = 9801611143 is a prime.

It is a super-4 number, since 4×9801613191⁴ (a number of 41 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9801613193) 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 in 3 ways as a sum of consecutive naturals, for example, 1633602196 + ... + 1633602201.

It is an arithmetic number, because the mean of its divisors is an integer number (3267204398).

Almost surely, 2^9801613191 is an apocalyptic number.

9801613191 is a deficient number, since it is larger than the sum of its proper divisors (3267204401).

9801613191 is a wasteful number, since it uses less digits than its factorization.

9801613191 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3267204400.

The product of its (nonzero) digits is 11664, while the sum is 39.

The square root of 9801613191 is about 99003.0968758048. The cubic root of 9801613191 is about 2140.0923760602.

The spelling of 9801613191 in words is "nine billion, eight hundred one million, six hundred thirteen thousand, one hundred ninety-one".