198485505 has 32 divisors (see below), whose sum is σ = 354856320. Its totient is φ = 105261120.

The previous prime is 198485479. The next prime is 198485513. The reversal of 198485505 is 505584891.

It is a happy number.

198485505 is a `hidden beast` number, since 1 + 98 + 4 + 8 + 550 + 5 = 666.

It is not a de Polignac number, because 198485505 - 2⁵ = 198485473 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20374 + ... + 28496.

It is an arithmetic number, because the mean of its divisors is an integer number (11089260).

Almost surely, 2^198485505 is an apocalyptic number.

198485505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

198485505 is a deficient number, since it is larger than the sum of its proper divisors (156370815).

198485505 is a wasteful number, since it uses less digits than its factorization.

198485505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8318 (or 8312 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 45.

The square root of 198485505 is about 14088.4883859128. The cubic root of 198485505 is about 583.3236691369.

The spelling of 198485505 in words is "one hundred ninety-eight million, four hundred eighty-five thousand, five hundred five".