218148270 has 16 divisors (see below), whose sum is σ = 523555920. Its totient is φ = 58172864.

The previous prime is 218148223. The next prime is 218148289. The reversal of 218148270 is 72841812.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3635775 + ... + 3635834.

It is an arithmetic number, because the mean of its divisors is an integer number (32722245).

Almost surely, 2^218148270 is an apocalyptic number.

218148270 is an abundant number, since it is smaller than the sum of its proper divisors (305407650).

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

218148270 is a wasteful number, since it uses less digits than its factorization.

218148270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7271619.

The product of its (nonzero) digits is 7168, while the sum is 33.

The square root of 218148270 is about 14769.8432625401. The cubic root of 218148270 is about 601.9825806301.

The spelling of 218148270 in words is "two hundred eighteen million, one hundred forty-eight thousand, two hundred seventy".