198030911901 has 8 divisors (see below), whose sum is σ = 264776708160. Its totient is φ = 131652861792.

The previous prime is 198030911899. The next prime is 198030911909. The reversal of 198030911901 is 109119030891.

It is a happy number.

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

It is not a de Polignac number, because 198030911901 - 2¹ = 198030911899 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (198030911909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91935280 + ... + 91937433.

It is an arithmetic number, because the mean of its divisors is an integer number (33097088520).

Almost surely, 2^198030911901 is an apocalyptic number.

It is an amenable number.

198030911901 is a deficient number, since it is larger than the sum of its proper divisors (66745796259).

198030911901 is a wasteful number, since it uses less digits than its factorization.

198030911901 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183873075.

The product of its (nonzero) digits is 17496, while the sum is 42.

The spelling of 198030911901 in words is "one hundred ninety-eight billion, thirty million, nine hundred eleven thousand, nine hundred one".