199795154 has 8 divisors (see below), whose sum is σ = 322746060. Its totient is φ = 92213136.

The previous prime is 199795151. The next prime is 199795201. The reversal of 199795154 is 451597991.

199795154 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 196644529 + 3150625 = 14023^2 + 1775^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (199795151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3842189 + ... + 3842240.

Almost surely, 2^199795154 is an apocalyptic number.

199795154 is a deficient number, since it is larger than the sum of its proper divisors (122950906).

199795154 is a wasteful number, since it uses less digits than its factorization.

199795154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7684444.

The product of its digits is 510300, while the sum is 50.

The square root of 199795154 is about 14134.8913685249. The cubic root of 199795154 is about 584.6038216594.

The spelling of 199795154 in words is "one hundred ninety-nine million, seven hundred ninety-five thousand, one hundred fifty-four".