168193193 has 16 divisors (see below), whose sum is σ = 198785664. Its totient is φ = 139309440.

The previous prime is 168193171. The next prime is 168193199. The reversal of 168193193 is 391391861.

It is a cyclic number.

It is not a de Polignac number, because 168193193 - 2¹² = 168189097 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 168193193.

It is not an unprimeable number, because it can be changed into a prime (168193199) 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, 27971 + ... + 33447.

It is an arithmetic number, because the mean of its divisors is an integer number (12424104).

Almost surely, 2^168193193 is an apocalyptic number.

It is an amenable number.

168193193 is a deficient number, since it is larger than the sum of its proper divisors (30592471).

168193193 is a wasteful number, since it uses less digits than its factorization.

168193193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5632.

The product of its digits is 34992, while the sum is 41.

The square root of 168193193 is about 12968.9318372794. The cubic root of 168193193 is about 551.9962641087.

The spelling of 168193193 in words is "one hundred sixty-eight million, one hundred ninety-three thousand, one hundred ninety-three".