198000361 has 4 divisors (see below), whose sum is σ = 213231172. Its totient is φ = 182769552.

The previous prime is 198000329. The next prime is 198000373. The reversal of 198000361 is 163000891.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 131675625 + 66324736 = 11475^2 + 8144^2 .

It is a cyclic number.

It is not a de Polignac number, because 198000361 - 2⁵ = 198000329 is a prime.

It is a super-2 number, since 2×198000361² = 78408285912260642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198000301) 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, 7615386 + ... + 7615411.

It is an arithmetic number, because the mean of its divisors is an integer number (53307793).

Almost surely, 2^198000361 is an apocalyptic number.

It is an amenable number.

198000361 is a deficient number, since it is larger than the sum of its proper divisors (15230811).

198000361 is a wasteful number, since it uses less digits than its factorization.

198000361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15230810.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 198000361 is about 14071.2601070409. The cubic root of 198000361 is about 582.8480225472.

The spelling of 198000361 in words is "one hundred ninety-eight million, three hundred sixty-one", and thus it is an aban number.