218861148 has 24 divisors (see below), whose sum is σ = 557101440. Its totient is φ = 66321520.

The previous prime is 218861141. The next prime is 218861177. The reversal of 218861148 is 841168812.

218861148 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (218861141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 828888 + ... + 829151.

It is an arithmetic number, because the mean of its divisors is an integer number (23212560).

Almost surely, 2^218861148 is an apocalyptic number.

It is an amenable number.

218861148 is an abundant number, since it is smaller than the sum of its proper divisors (338240292).

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

218861148 is a wasteful number, since it uses less digits than its factorization.

218861148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1658057 (or 1658055 counting only the distinct ones).

The product of its digits is 24576, while the sum is 39.

The square root of 218861148 is about 14793.9564687747. The cubic root of 218861148 is about 602.6375992378.

It can be divided in two parts, 2188 and 61148, that added together give a palindrome (63336).

The spelling of 218861148 in words is "two hundred eighteen million, eight hundred sixty-one thousand, one hundred forty-eight".