218148894 has 24 divisors (see below), whose sum is σ = 476996520. Its totient is φ = 72048528.

The previous prime is 218148883. The next prime is 218148907. The reversal of 218148894 is 498841812.

218148894 is a `hidden beast` number, since 2 + 1 + 81 + 488 + 94 = 666.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53632 + ... + 57555.

It is an arithmetic number, because the mean of its divisors is an integer number (19874855).

Almost surely, 2^218148894 is an apocalyptic number.

218148894 is an abundant number, since it is smaller than the sum of its proper divisors (258847626).

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

218148894 is a wasteful number, since it uses less digits than its factorization.

218148894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111304 (or 111301 counting only the distinct ones).

The product of its digits is 147456, while the sum is 45.

The square root of 218148894 is about 14769.8643866489. The cubic root of 218148894 is about 601.9831546079.

The spelling of 218148894 in words is "two hundred eighteen million, one hundred forty-eight thousand, eight hundred ninety-four".