218055379 has 16 divisors (see below), whose sum is σ = 239656320. Its totient is φ = 197478400.

The previous prime is 218055377. The next prime is 218055491. The reversal of 218055379 is 973550812.

It is not a de Polignac number, because 218055379 - 2¹ = 218055377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (218055371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197142 + ... + 198244.

It is an arithmetic number, because the mean of its divisors is an integer number (14978520).

Almost surely, 2^218055379 is an apocalyptic number.

218055379 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

218055379 is a deficient number, since it is larger than the sum of its proper divisors (21600941).

218055379 is a wasteful number, since it uses less digits than its factorization.

218055379 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1550.

The product of its (nonzero) digits is 75600, while the sum is 40.

The square root of 218055379 is about 14766.6983107261. The cubic root of 218055379 is about 601.8971239163.

The spelling of 218055379 in words is "two hundred eighteen million, fifty-five thousand, three hundred seventy-nine".