218919941 has 8 divisors (see below), whose sum is σ = 220286304. Its totient is φ = 217558000.

The previous prime is 218919929. The next prime is 218919971. The reversal of 218919941 is 149919812.

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 218919941 - 2¹⁴ = 218903557 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 218919892 and 218919901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218919971) 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 7 ways as a sum of consecutive naturals, for example, 170795 + ... + 172071.

It is an arithmetic number, because the mean of its divisors is an integer number (27535788).

Almost surely, 2^218919941 is an apocalyptic number.

It is an amenable number.

218919941 is a deficient number, since it is larger than the sum of its proper divisors (1366363).

218919941 is a wasteful number, since it uses less digits than its factorization.

218919941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2211.

The product of its digits is 46656, while the sum is 44.

The square root of 218919941 is about 14795.9433967557. The cubic root of 218919941 is about 602.6915568887.

The spelling of 218919941 in words is "two hundred eighteen million, nine hundred nineteen thousand, nine hundred forty-one".