198851374 has 16 divisors (see below), whose sum is σ = 303664320. Its totient is φ = 97643520.

The previous prime is 198851371. The next prime is 198851381. The reversal of 198851374 is 473158891.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198851371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27234 + ... + 33754.

It is an arithmetic number, because the mean of its divisors is an integer number (18979020).

Almost surely, 2^198851374 is an apocalyptic number.

198851374 is a deficient number, since it is larger than the sum of its proper divisors (104812946).

198851374 is a wasteful number, since it uses less digits than its factorization.

198851374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6795.

The product of its digits is 241920, while the sum is 46.

The square root of 198851374 is about 14101.4670867963. The cubic root of 198851374 is about 583.6818633016.

The spelling of 198851374 in words is "one hundred ninety-eight million, eight hundred fifty-one thousand, three hundred seventy-four".