226389018 has 16 divisors (see below), whose sum is σ = 460452960. Its totient is φ = 74183856.

The previous prime is 226389013. The next prime is 226389043. The reversal of 226389018 is 810983622.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (226389013) 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, 319405 + ... + 320112.

It is an arithmetic number, because the mean of its divisors is an integer number (28778310).

Almost surely, 2^226389018 is an apocalyptic number.

226389018 is an abundant number, since it is smaller than the sum of its proper divisors (234063942).

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

226389018 is a wasteful number, since it uses less digits than its factorization.

226389018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639581.

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 226389018 is about 15046.2293615377. The cubic root of 226389018 is about 609.4692310399.

The spelling of 226389018 in words is "two hundred twenty-six million, three hundred eighty-nine thousand, eighteen".