199015868 has 12 divisors (see below), whose sum is σ = 356377560. Its totient is φ = 97193712.

The previous prime is 199015867. The next prime is 199015897. The reversal of 199015868 is 868510991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (199015867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 578363 + ... + 578706.

It is an arithmetic number, because the mean of its divisors is an integer number (29698130).

Almost surely, 2^199015868 is an apocalyptic number.

It is an amenable number.

199015868 is a deficient number, since it is larger than the sum of its proper divisors (157361692).

199015868 is a wasteful number, since it uses less digits than its factorization.

199015868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1157116 (or 1157114 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 47.

The square root of 199015868 is about 14107.2983948026. The cubic root of 199015868 is about 583.8427635429.

The spelling of 199015868 in words is "one hundred ninety-nine million, fifteen thousand, eight hundred sixty-eight".