218325146 has 8 divisors (see below), whose sum is σ = 352679124. Its totient is φ = 100765440.

The previous prime is 218325091. The next prime is 218325167. The reversal of 218325146 is 641523812.

It can be written as a sum of positive squares in 2 ways, for example, as 210975625 + 7349521 = 14525^2 + 2711^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 4198535 + ... + 4198586.

Almost surely, 2^218325146 is an apocalyptic number.

218325146 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

218325146 is a deficient number, since it is larger than the sum of its proper divisors (134353978).

218325146 is a wasteful number, since it uses less digits than its factorization.

218325146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8397136.

The product of its digits is 11520, while the sum is 32.

The square root of 218325146 is about 14775.8297905735. The cubic root of 218325146 is about 602.1452337752.

Adding to 218325146 its reverse (641523812), we get a palindrome (859848958).

The spelling of 218325146 in words is "two hundred eighteen million, three hundred twenty-five thousand, one hundred forty-six".