218395098 has 12 divisors (see below), whose sum is σ = 473189418. Its totient is φ = 72798360.

The previous prime is 218395091. The next prime is 218395109. The reversal of 218395098 is 890593812.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 162639009 + 55756089 = 12753^2 + 7467^2 .

It is not an unprimeable number, because it can be changed into a prime (218395091) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 6066513 + ... + 6066548.

Almost surely, 2^218395098 is an apocalyptic number.

218395098 is an abundant number, since it is smaller than the sum of its proper divisors (254794320).

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

218395098 is a wasteful number, since it uses less digits than its factorization.

218395098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12133069 (or 12133066 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 45.

The square root of 218395098 is about 14778.1967100184. The cubic root of 218395098 is about 602.2095365921.

The spelling of 218395098 in words is "two hundred eighteen million, three hundred ninety-five thousand, ninety-eight".