198188854 has 4 divisors (see below), whose sum is σ = 297283284. Its totient is φ = 99094426.

The previous prime is 198188843. The next prime is 198188857. The reversal of 198188854 is 458881891.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198188857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49547212 + ... + 49547215.

It is an arithmetic number, because the mean of its divisors is an integer number (74320821).

Almost surely, 2^198188854 is an apocalyptic number.

198188854 is a deficient number, since it is larger than the sum of its proper divisors (99094430).

198188854 is an equidigital number, since it uses as much as digits as its factorization.

198188854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99094429.

The product of its digits is 737280, while the sum is 52.

The square root of 198188854 is about 14077.9563147497. The cubic root of 198188854 is about 583.0329177121.

The spelling of 198188854 in words is "one hundred ninety-eight million, one hundred eighty-eight thousand, eight hundred fifty-four".