198054185 has 32 divisors (see below), whose sum is σ = 278691840. Its totient is φ = 132320448.

The previous prime is 198054113. The next prime is 198054191. The reversal of 198054185 is 581450891.

It is a cyclic number.

It is not a de Polignac number, because 198054185 - 2¹² = 198050089 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 229064 + ... + 229926.

It is an arithmetic number, because the mean of its divisors is an integer number (8709120).

Almost surely, 2^198054185 is an apocalyptic number.

It is an amenable number.

198054185 is a deficient number, since it is larger than the sum of its proper divisors (80637655).

198054185 is an equidigital number, since it uses as much as digits as its factorization.

198054185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1037.

The product of its (nonzero) digits is 57600, while the sum is 41.

The square root of 198054185 is about 14073.1725278986. The cubic root of 198054185 is about 582.9008311542.

It can be divided in two parts, 1980 and 54185, that added together give a palindrome (56165).

The spelling of 198054185 in words is "one hundred ninety-eight million, fifty-four thousand, one hundred eighty-five".