218379151 has 2 divisors, whose sum is σ = 218379152. Its totient is φ = 218379150.

The previous prime is 218379149. The next prime is 218379199. The reversal of 218379151 is 151973812.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 218379151 - 2¹ = 218379149 is a prime.

Together with 218379149, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 218379151.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (218379131) 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 as a sum of consecutive naturals, namely, 109189575 + 109189576.

It is an arithmetic number, because the mean of its divisors is an integer number (109189576).

Almost surely, 2^218379151 is an apocalyptic number.

218379151 is a deficient number, since it is larger than the sum of its proper divisors (1).

218379151 is an equidigital number, since it uses as much as digits as its factorization.

218379151 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15120, while the sum is 37.

The square root of 218379151 is about 14777.6571553139. The cubic root of 218379151 is about 602.1948786482.

The spelling of 218379151 in words is "two hundred eighteen million, three hundred seventy-nine thousand, one hundred fifty-one".