161603147189 has 8 divisors (see below), whose sum is σ = 176568524832. Its totient is φ = 146683466640.

The previous prime is 161603147179. The next prime is 161603147203. The reversal of 161603147189 is 981741306161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 161603147189 - 2⁸ = 161603146933 is a prime.

It is a super-2 number, since 2×161603147189² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161603147149) 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 7 ways as a sum of consecutive naturals, for example, 11416874 + ... + 11431019.

It is an arithmetic number, because the mean of its divisors is an integer number (22071065604).

Almost surely, 2^161603147189 is an apocalyptic number.

It is an amenable number.

161603147189 is a deficient number, since it is larger than the sum of its proper divisors (14965377643).

161603147189 is a wasteful number, since it uses less digits than its factorization.

161603147189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22848547.

The product of its (nonzero) digits is 217728, while the sum is 47.

The spelling of 161603147189 in words is "one hundred sixty-one billion, six hundred three million, one hundred forty-seven thousand, one hundred eighty-nine".