198001603 has 8 divisors (see below), whose sum is σ = 208552400. Its totient is φ = 187463808.

The previous prime is 198001597. The next prime is 198001663. The reversal of 198001603 is 306100891.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-198001603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198001663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54343 + ... + 57871.

It is an arithmetic number, because the mean of its divisors is an integer number (26069050).

Almost surely, 2^198001603 is an apocalyptic number.

198001603 is a deficient number, since it is larger than the sum of its proper divisors (10550797).

198001603 is a wasteful number, since it uses less digits than its factorization.

198001603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6501.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 198001603 is about 14071.3042394797. The cubic root of 198001603 is about 582.8492412246.

The spelling of 198001603 in words is "one hundred ninety-eight million, one thousand, six hundred three".