218182441 has 3 divisors (see below), whose sum is σ = 218197213. Its totient is φ = 218167670.

The previous prime is 218182411. The next prime is 218182469. The reversal of 218182441 is 144281812.

The square root of 218182441 is 14771.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a de Polignac number, because none of the positive numbers 2^k-218182441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (218182411) 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 2 ways as a sum of consecutive naturals, for example, 7386 + ... + 22156.

Almost surely, 2^218182441 is an apocalyptic number.

218182441 is the 14771-st square number.

218182441 is the 7386-th centered octagonal number.

It is an amenable number.

218182441 is a deficient number, since it is larger than the sum of its proper divisors (14772).

218182441 is an frugal number, since it uses more digits than its factorization.

218182441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29542 (or 14771 counting only the distinct ones).

The product of its digits is 4096, while the sum is 31.

The cubic root of 218182441 is about 602.0140107408.

Multiplying 218182441 by its product of digits (4096), we get a square (893675278336 = 945344²).

The spelling of 218182441 in words is "two hundred eighteen million, one hundred eighty-two thousand, four hundred forty-one".