198809167 has 16 divisors (see below), whose sum is σ = 208291072. Its totient is φ = 189604800.

The previous prime is 198809147. The next prime is 198809189. The reversal of 198809167 is 761908891.

It is a cyclic number.

It is not a de Polignac number, because 198809167 - 2¹⁵ = 198776399 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 198809167.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198809147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 434803 + ... + 435259.

It is an arithmetic number, because the mean of its divisors is an integer number (13018192).

Almost surely, 2^198809167 is an apocalyptic number.

198809167 is a deficient number, since it is larger than the sum of its proper divisors (9481905).

198809167 is a wasteful number, since it uses less digits than its factorization.

198809167 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 718.

The product of its (nonzero) digits is 217728, while the sum is 49.

The square root of 198809167 is about 14099.9704609620. The cubic root of 198809167 is about 583.6405641090.

The spelling of 198809167 in words is "one hundred ninety-eight million, eight hundred nine thousand, one hundred sixty-seven".