218219013 has 12 divisors (see below), whose sum is σ = 325373568. Its totient is φ = 140786280.

The previous prime is 218219003. The next prime is 218219041. The reversal of 218219013 is 310912812.

It is a de Polignac number, because none of the positive numbers 2^k-218219013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218219003) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 390795 + ... + 391352.

It is an arithmetic number, because the mean of its divisors is an integer number (27114464).

Almost surely, 2^218219013 is an apocalyptic number.

It is an amenable number.

218219013 is a deficient number, since it is larger than the sum of its proper divisors (107154555).

218219013 is a wasteful number, since it uses less digits than its factorization.

218219013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 782184 (or 782181 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 218219013 is about 14772.2379144123. The cubic root of 218219013 is about 602.0476456294.

The spelling of 218219013 in words is "two hundred eighteen million, two hundred nineteen thousand, thirteen".