218465011 has 4 divisors (see below), whose sum is σ = 231315912. Its totient is φ = 205614112.

The previous prime is 218464931. The next prime is 218465053. The reversal of 218465011 is 110564812.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 218465011 - 2¹¹ = 218462963 is a prime.

It is a super-2 number, since 2×218465011² = 95453922062460242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (218465411) 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, 6425425 + ... + 6425458.

It is an arithmetic number, because the mean of its divisors is an integer number (57828978).

Almost surely, 2^218465011 is an apocalyptic number.

218465011 is a deficient number, since it is larger than the sum of its proper divisors (12850901).

218465011 is a wasteful number, since it uses less digits than its factorization.

218465011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12850900.

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 218465011 is about 14780.5619311310. The cubic root of 218465011 is about 602.2737898406.

The spelling of 218465011 in words is "two hundred eighteen million, four hundred sixty-five thousand, eleven".