201998841 has 16 divisors (see below), whose sum is σ = 300984768. Its totient is φ = 119436800.

The previous prime is 201998827. The next prime is 201998921. The reversal of 201998841 is 148899102.

It is a cyclic number.

It is not a de Polignac number, because 201998841 - 2¹¹ = 201996793 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 201998793 and 201998802.

It is not an unprimeable number, because it can be changed into a prime (201998801) 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, 73296 + ... + 76001.

It is an arithmetic number, because the mean of its divisors is an integer number (18811548).

Almost surely, 2^201998841 is an apocalyptic number.

It is an amenable number.

201998841 is a deficient number, since it is larger than the sum of its proper divisors (98985927).

201998841 is a wasteful number, since it uses less digits than its factorization.

201998841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149352.

The product of its (nonzero) digits is 41472, while the sum is 42.

The square root of 201998841 is about 14212.6296300157. The cubic root of 201998841 is about 586.7453086654.

The spelling of 201998841 in words is "two hundred one million, nine hundred ninety-eight thousand, eight hundred forty-one".