198565330 has 8 divisors (see below), whose sum is σ = 357417612. Its totient is φ = 79426128.

The previous prime is 198565327. The next prime is 198565331. The reversal of 198565330 is 33565891.

It can be written as a sum of positive squares in 2 ways, for example, as 194797849 + 3767481 = 13957^2 + 1941^2 .

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

It is not an unprimeable number, because it can be changed into a prime (198565331) 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, 9928257 + ... + 9928276.

Almost surely, 2^198565330 is an apocalyptic number.

198565330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

198565330 is a deficient number, since it is larger than the sum of its proper divisors (158852282).

198565330 is a wasteful number, since it uses less digits than its factorization.

198565330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19856540.

The product of its (nonzero) digits is 97200, while the sum is 40.

The square root of 198565330 is about 14091.3210878186. The cubic root of 198565330 is about 583.4018571656.

The spelling of 198565330 in words is "one hundred ninety-eight million, five hundred sixty-five thousand, three hundred thirty".