218841001 has 8 divisors (see below), whose sum is σ = 221214240. Its totient is φ = 216474048.

The previous prime is 218840953. The next prime is 218841023. The reversal of 218841001 is 100148812.

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

It is a cyclic number.

It is not a de Polignac number, because 218841001 - 2¹¹ = 218838953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (218841041) 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, 106950 + ... + 108976.

It is an arithmetic number, because the mean of its divisors is an integer number (27651780).

Almost surely, 2^218841001 is an apocalyptic number.

It is an amenable number.

218841001 is a deficient number, since it is larger than the sum of its proper divisors (2373239).

218841001 is a wasteful number, since it uses less digits than its factorization.

218841001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3143.

The product of its (nonzero) digits is 512, while the sum is 25.

The square root of 218841001 is about 14793.2755331603. The cubic root of 218841001 is about 602.6191069770.

Adding to 218841001 its reverse (100148812), we get a palindrome (318989813).

The spelling of 218841001 in words is "two hundred eighteen million, eight hundred forty-one thousand, one".