218173014 has 20 divisors (see below), whose sum is σ = 488869524. Its totient is φ = 72724284.

The previous prime is 218172967. The next prime is 218173049. The reversal of 218173014 is 410371812.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 673212 + ... + 673535.

Almost surely, 2^218173014 is an apocalyptic number.

218173014 is an abundant number, since it is smaller than the sum of its proper divisors (270696510).

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

218173014 is a wasteful number, since it uses less digits than its factorization.

218173014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1346761 (or 1346752 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 218173014 is about 14770.6808915500. The cubic root of 218173014 is about 602.0053402175.

The spelling of 218173014 in words is "two hundred eighteen million, one hundred seventy-three thousand, fourteen".