198748071 has 12 divisors (see below), whose sum is σ = 303967872. Its totient is φ = 124704576.

The previous prime is 198748057. The next prime is 198748111. The reversal of 198748071 is 170847891.

It is not a de Polignac number, because 198748071 - 2¹⁵ = 198715303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198748271) 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 11 ways as a sum of consecutive naturals, for example, 649351 + ... + 649656.

It is an arithmetic number, because the mean of its divisors is an integer number (25330656).

Almost surely, 2^198748071 is an apocalyptic number.

198748071 is a deficient number, since it is larger than the sum of its proper divisors (105219801).

198748071 is a wasteful number, since it uses less digits than its factorization.

198748071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1299030 (or 1299027 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 45.

The square root of 198748071 is about 14097.8037651260. The cubic root of 198748071 is about 583.5807718339.

The spelling of 198748071 in words is "one hundred ninety-eight million, seven hundred forty-eight thousand, seventy-one".