198195107 has 16 divisors (see below), whose sum is σ = 223503840. Its totient is φ = 174182400.

The previous prime is 198195103. The next prime is 198195113. The reversal of 198195107 is 701591891.

It is a cyclic number.

It is not a de Polignac number, because 198195107 - 2² = 198195103 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198195103) 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, 49019 + ... + 52907.

It is an arithmetic number, because the mean of its divisors is an integer number (13968990).

Almost surely, 2^198195107 is an apocalyptic number.

198195107 is a deficient number, since it is larger than the sum of its proper divisors (25308733).

198195107 is a wasteful number, since it uses less digits than its factorization.

198195107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4054.

The product of its (nonzero) digits is 22680, while the sum is 41.

The square root of 198195107 is about 14078.1783977900. The cubic root of 198195107 is about 583.0390493494.

The spelling of 198195107 in words is "one hundred ninety-eight million, one hundred ninety-five thousand, one hundred seven".