198120163 has 16 divisors (see below), whose sum is σ = 221117440. Its totient is φ = 176709600.

The previous prime is 198120157. The next prime is 198120173. The reversal of 198120163 is 361021891.

It is a cyclic number.

It is not a de Polignac number, because 198120163 - 2⁹ = 198119651 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (198120173) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17248 + ... + 26338.

It is an arithmetic number, because the mean of its divisors is an integer number (13819840).

Almost surely, 2^198120163 is an apocalyptic number.

198120163 is a deficient number, since it is larger than the sum of its proper divisors (22997277).

198120163 is a wasteful number, since it uses less digits than its factorization.

198120163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9178.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 198120163 is about 14075.5164381276. The cubic root of 198120163 is about 582.9655514246.

The spelling of 198120163 in words is "one hundred ninety-eight million, one hundred twenty thousand, one hundred sixty-three".