199861274 has 8 divisors (see below), whose sum is σ = 299990100. Its totient is φ = 99864576.

The previous prime is 199861267. The next prime is 199861279. The reversal of 199861274 is 472168991.

199861274 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 188925025 + 10936249 = 13745^2 + 3307^2 .

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 (199861279) 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, 29159 + ... + 35354.

Almost surely, 2^199861274 is an apocalyptic number.

199861274 is a deficient number, since it is larger than the sum of its proper divisors (100128826).

199861274 is a wasteful number, since it uses less digits than its factorization.

199861274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66064.

The product of its digits is 217728, while the sum is 47.

The square root of 199861274 is about 14137.2300681569. The cubic root of 199861274 is about 584.6683039398.

The spelling of 199861274 in words is "one hundred ninety-nine million, eight hundred sixty-one thousand, two hundred seventy-four".