198603481 has 4 divisors (see below), whose sum is σ = 199751652. Its totient is φ = 197455312.

The previous prime is 198603463. The next prime is 198603487. The reversal of 198603481 is 184306891.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 184306891 = 149 ⋅1236959.

It can be written as a sum of positive squares in 2 ways, for example, as 120121600 + 78481881 = 10960^2 + 8859^2 .

It is a cyclic number.

It is not a de Polignac number, because 198603481 - 2¹³ = 198595289 is a prime.

It is a super-2 number, since 2×198603481² = 78886685330634722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (198603487) 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 3 ways as a sum of consecutive naturals, for example, 573826 + ... + 574171.

It is an arithmetic number, because the mean of its divisors is an integer number (49937913).

Almost surely, 2^198603481 is an apocalyptic number.

It is an amenable number.

198603481 is a deficient number, since it is larger than the sum of its proper divisors (1148171).

198603481 is a wasteful number, since it uses less digits than its factorization.

198603481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1148170.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 198603481 is about 14092.6747283828. The cubic root of 198603481 is about 583.4392184025.

The spelling of 198603481 in words is "one hundred ninety-eight million, six hundred three thousand, four hundred eighty-one".