193897168 has 20 divisors (see below), whose sum is σ = 385830340. Its totient is φ = 94328064.

The previous prime is 193897163. The next prime is 193897177. The reversal of 193897168 is 861798391.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 156050064 + 37847104 = 12492^2 + 6152^2 .

It is a super-2 number, since 2×193897168² = 75192223516840448, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (193897163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163173 + ... + 164356.

It is an arithmetic number, because the mean of its divisors is an integer number (19291517).

Almost surely, 2^193897168 is an apocalyptic number.

It is an amenable number.

193897168 is a deficient number, since it is larger than the sum of its proper divisors (191933172).

193897168 is a wasteful number, since it uses less digits than its factorization.

193897168 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327574 (or 327568 counting only the distinct ones).

The product of its digits is 653184, while the sum is 52.

The square root of 193897168 is about 13924.6963342114. The cubic root of 193897168 is about 578.7937355595.

The spelling of 193897168 in words is "one hundred ninety-three million, eight hundred ninety-seven thousand, one hundred sixty-eight".