198084551 has 8 divisors (see below), whose sum is σ = 229484064. Its totient is φ = 167460480.

The previous prime is 198084539. The next prime is 198084581. The reversal of 198084551 is 155480891.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 198084551 - 2¹⁸ = 197822407 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 198084499 and 198084508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198084581) 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, 193310 + ... + 194331.

It is an arithmetic number, because the mean of its divisors is an integer number (28685508).

Almost surely, 2^198084551 is an apocalyptic number.

198084551 is a deficient number, since it is larger than the sum of its proper divisors (31399513).

198084551 is an equidigital number, since it uses as much as digits as its factorization.

198084551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 387721.

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

The square root of 198084551 is about 14074.2513477627. The cubic root of 198084551 is about 582.9306200764.

The spelling of 198084551 in words is "one hundred ninety-eight million, eighty-four thousand, five hundred fifty-one".