218219049 has 16 divisors (see below), whose sum is σ = 323516800. Its totient is φ = 145376208.

The previous prime is 218219041. The next prime is 218219051. The reversal of 218219049 is 940912812.

It is not a de Polignac number, because 218219049 - 2³ = 218219041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (218219041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65967 + ... + 69195.

It is an arithmetic number, because the mean of its divisors is an integer number (20219800).

Almost surely, 2^218219049 is an apocalyptic number.

It is an amenable number.

218219049 is a deficient number, since it is larger than the sum of its proper divisors (105297751).

218219049 is a wasteful number, since it uses less digits than its factorization.

218219049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5741 (or 5735 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 218219049 is about 14772.2391329141. The cubic root of 218219049 is about 602.0476787364.

The spelling of 218219049 in words is "two hundred eighteen million, two hundred nineteen thousand, forty-nine".