218942341 has 4 divisors (see below), whose sum is σ = 218979072. Its totient is φ = 218905612.

The previous prime is 218942329. The next prime is 218942363. The reversal of 218942341 is 143249812.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 218942341 - 2¹⁷ = 218811269 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 218942297 and 218942306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218942041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7135 + ... + 22108.

It is an arithmetic number, because the mean of its divisors is an integer number (54744768).

Almost surely, 2^218942341 is an apocalyptic number.

It is an amenable number.

218942341 is a deficient number, since it is larger than the sum of its proper divisors (36731).

218942341 is an equidigital number, since it uses as much as digits as its factorization.

218942341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36730.

The product of its digits is 13824, while the sum is 34.

The square root of 218942341 is about 14796.7003416302. The cubic root of 218942341 is about 602.7121120901.

The spelling of 218942341 in words is "two hundred eighteen million, nine hundred forty-two thousand, three hundred forty-one".