199390768 has 20 divisors (see below), whose sum is σ = 387476440. Its totient is φ = 99396864.

The previous prime is 199390753. The next prime is 199390771. The reversal of 199390768 is 867093991.

199390768 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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, 13098 + ... + 23881.

It is an arithmetic number, because the mean of its divisors is an integer number (19373822).

Almost surely, 2^199390768 is an apocalyptic number.

It is an amenable number.

199390768 is a deficient number, since it is larger than the sum of its proper divisors (188085672).

199390768 is a wasteful number, since it uses less digits than its factorization.

199390768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37324 (or 37318 counting only the distinct ones).

The product of its (nonzero) digits is 734832, while the sum is 52.

The square root of 199390768 is about 14120.5795915040. The cubic root of 199390768 is about 584.2091419569.

The spelling of 199390768 in words is "one hundred ninety-nine million, three hundred ninety thousand, seven hundred sixty-eight".