199778848 has 24 divisors (see below), whose sum is σ = 393688512. Its totient is φ = 99794496.

The previous prime is 199778837. The next prime is 199778867. The reversal of 199778848 is 848877991.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41461 + ... + 46027.

It is an arithmetic number, because the mean of its divisors is an integer number (16403688).

Almost surely, 2^199778848 is an apocalyptic number.

It is an amenable number.

199778848 is a deficient number, since it is larger than the sum of its proper divisors (193909664).

199778848 is a wasteful number, since it uses less digits than its factorization.

199778848 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5944 (or 5936 counting only the distinct ones).

The product of its digits is 8128512, while the sum is 61.

The square root of 199778848 is about 14134.3145571336. The cubic root of 199778848 is about 584.5879173543.

The spelling of 199778848 in words is "one hundred ninety-nine million, seven hundred seventy-eight thousand, eight hundred forty-eight".