199078338 has 16 divisors (see below), whose sum is σ = 402262560. Its totient is φ = 65675136.

The previous prime is 199078307. The next prime is 199078349. The reversal of 199078338 is 833870991.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170448 + ... + 171611.

It is an arithmetic number, because the mean of its divisors is an integer number (25141410).

Almost surely, 2^199078338 is an apocalyptic number.

199078338 is an abundant number, since it is smaller than the sum of its proper divisors (203184222).

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

199078338 is a wasteful number, since it uses less digits than its factorization.

199078338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342161.

The product of its (nonzero) digits is 326592, while the sum is 48.

The square root of 199078338 is about 14109.5123232520. The cubic root of 199078338 is about 583.9038455097.

The spelling of 199078338 in words is "one hundred ninety-nine million, seventy-eight thousand, three hundred thirty-eight".