163684691193 has 16 divisors (see below), whose sum is σ = 229744226880. Its totient is φ = 103374707904.

The previous prime is 163684691167. The next prime is 163684691227. The reversal of 163684691193 is 391196486361.

It is not a de Polignac number, because 163684691193 - 2⁵ = 163684691161 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (163684691293) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1339855 + ... + 1456907.

It is an arithmetic number, because the mean of its divisors is an integer number (14359014180).

Almost surely, 2^163684691193 is an apocalyptic number.

It is an amenable number.

163684691193 is a deficient number, since it is larger than the sum of its proper divisors (66059535687).

163684691193 is a wasteful number, since it uses less digits than its factorization.

163684691193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 141608.

The product of its digits is 5038848, while the sum is 57.

The spelling of 163684691193 in words is "one hundred sixty-three billion, six hundred eighty-four million, six hundred ninety-one thousand, one hundred ninety-three".