198891874 has 32 divisors (see below), whose sum is σ = 327338496. Its totient is φ = 90263040.

The previous prime is 198891871. The next prime is 198891887. The reversal of 198891874 is 478198891.

198891874 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (198891871) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112582 + ... + 114334.

It is an arithmetic number, because the mean of its divisors is an integer number (10229328).

Almost surely, 2^198891874 is an apocalyptic number.

198891874 is a deficient number, since it is larger than the sum of its proper divisors (128446622).

198891874 is a wasteful number, since it uses less digits than its factorization.

198891874 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1890.

The product of its digits is 1161216, while the sum is 55.

The square root of 198891874 is about 14102.9030344819. The cubic root of 198891874 is about 583.7214867154.

The spelling of 198891874 in words is "one hundred ninety-eight million, eight hundred ninety-one thousand, eight hundred seventy-four".