199969168 has 20 divisors (see below), whose sum is σ = 442789120. Its totient is φ = 85701024.

The previous prime is 199969151. The next prime is 199969171. The reversal of 199969168 is 861969991.

199969168 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×199969168² = 79975336301224448, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 892608 + ... + 892831.

It is an arithmetic number, because the mean of its divisors is an integer number (22139456).

Almost surely, 2^199969168 is an apocalyptic number.

It is an amenable number.

199969168 is an abundant number, since it is smaller than the sum of its proper divisors (242819952).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

199969168 is a wasteful number, since it uses less digits than its factorization.

199969168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1785454 (or 1785448 counting only the distinct ones).

The product of its digits is 1889568, while the sum is 58.

The square root of 199969168 is about 14141.0455059023. The cubic root of 199969168 is about 584.7734949932.

The spelling of 199969168 in words is "one hundred ninety-nine million, nine hundred sixty-nine thousand, one hundred sixty-eight".