198216115 has 4 divisors (see below), whose sum is σ = 237859344. Its totient is φ = 158572888.

The previous prime is 198216103. The next prime is 198216119. The reversal of 198216115 is 511612891.

198216115 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 198216115 - 2¹⁵ = 198183347 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198216119) 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, 19821607 + ... + 19821616.

It is an arithmetic number, because the mean of its divisors is an integer number (59464836).

Almost surely, 2^198216115 is an apocalyptic number.

198216115 is a deficient number, since it is larger than the sum of its proper divisors (39643229).

198216115 is an equidigital number, since it uses as much as digits as its factorization.

198216115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39643228.

The product of its digits is 4320, while the sum is 34.

The square root of 198216115 is about 14078.9244972761. The cubic root of 198216115 is about 583.0596486666.

The spelling of 198216115 in words is "one hundred ninety-eight million, two hundred sixteen thousand, one hundred fifteen".