218195241 has 16 divisors (see below), whose sum is σ = 317737920. Its totient is φ = 132088320.

The previous prime is 218195239. The next prime is 218195261. The reversal of 218195241 is 142591812.

It is not a de Polignac number, because 218195241 - 2¹ = 218195239 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (218195261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30021 + ... + 36573.

It is an arithmetic number, because the mean of its divisors is an integer number (19858620).

Almost surely, 2^218195241 is an apocalyptic number.

It is an amenable number.

218195241 is a deficient number, since it is larger than the sum of its proper divisors (99542679).

218195241 is a wasteful number, since it uses less digits than its factorization.

218195241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7576.

The product of its digits is 5760, while the sum is 33.

The square root of 218195241 is about 14771.4332750752. The cubic root of 218195241 is about 602.0257831954.

The spelling of 218195241 in words is "two hundred eighteen million, one hundred ninety-five thousand, two hundred forty-one".