163950217789 has 8 divisors (see below), whose sum is σ = 172631053280. Its totient is φ = 155274570000.

The previous prime is 163950217763. The next prime is 163950217799. The reversal of 163950217789 is 987712059361.

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 163950217789 - 2⁵ = 163950217757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163950217729) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1231962 + ... + 1358539.

It is an arithmetic number, because the mean of its divisors is an integer number (21578881660).

Almost surely, 2^163950217789 is an apocalyptic number.

163950217789 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

163950217789 is a deficient number, since it is larger than the sum of its proper divisors (8680835491).

163950217789 is a wasteful number, since it uses less digits than its factorization.

163950217789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2593851.

The product of its (nonzero) digits is 5715360, while the sum is 58.

The spelling of 163950217789 in words is "one hundred sixty-three billion, nine hundred fifty million, two hundred seventeen thousand, seven hundred eighty-nine".