218967849 has 12 divisors (see below), whose sum is σ = 326490112. Its totient is φ = 141269400.

The previous prime is 218967829. The next prime is 218967851. The reversal of 218967849 is 948769812.

218967849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 218967849 - 2⁵ = 218967817 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 218967795 and 218967804.

It is not an unprimeable number, because it can be changed into a prime (218967809) 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, 392137 + ... + 392694.

Almost surely, 2^218967849 is an apocalyptic number.

It is an amenable number.

218967849 is a deficient number, since it is larger than the sum of its proper divisors (107522263).

218967849 is a wasteful number, since it uses less digits than its factorization.

218967849 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 784868 (or 784865 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 54.

The square root of 218967849 is about 14797.5622654544. The cubic root of 218967849 is about 602.7355176185.

The spelling of 218967849 in words is "two hundred eighteen million, nine hundred sixty-seven thousand, eight hundred forty-nine".