198451327 has 4 divisors (see below), whose sum is σ = 198531496. Its totient is φ = 198371160.

The previous prime is 198451301. The next prime is 198451339. The reversal of 198451327 is 723154891.

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

It is a cyclic number.

It is not a de Polignac number, because 198451327 - 2¹⁵ = 198418559 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 198451327.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198451927) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36249 + ... + 41362.

It is an arithmetic number, because the mean of its divisors is an integer number (49632874).

Almost surely, 2^198451327 is an apocalyptic number.

198451327 is a deficient number, since it is larger than the sum of its proper divisors (80169).

198451327 is an equidigital number, since it uses as much as digits as its factorization.

198451327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80168.

The product of its digits is 60480, while the sum is 40.

The square root of 198451327 is about 14087.2753575700. The cubic root of 198451327 is about 583.2901856158.

The spelling of 198451327 in words is "one hundred ninety-eight million, four hundred fifty-one thousand, three hundred twenty-seven".