218646948 has 48 divisors (see below), whose sum is σ = 551183360. Its totient is φ = 67060224.

The previous prime is 218646941. The next prime is 218646971. The reversal of 218646948 is 849646812.

It is a junction number, because it is equal to n+sod(n) for n = 218646897 and 218646906.

It is not an unprimeable number, because it can be changed into a prime (218646941) 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, 50493 + ... + 54651.

Almost surely, 2^218646948 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 218646948, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (275591680).

218646948 is an abundant number, since it is smaller than the sum of its proper divisors (332536412).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

218646948 is a wasteful number, since it uses less digits than its factorization.

218646948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4516 (or 4514 counting only the distinct ones).

The product of its digits is 663552, while the sum is 48.

The square root of 218646948 is about 14786.7152539027. The cubic root of 218646948 is about 602.4409340466.

The spelling of 218646948 in words is "two hundred eighteen million, six hundred forty-six thousand, nine hundred forty-eight".