226390618 has 4 divisors (see below), whose sum is σ = 339585930. Its totient is φ = 113195308.

The previous prime is 226390603. The next prime is 226390631. The reversal of 226390618 is 816093622.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 159592689 + 66797929 = 12633^2 + 8173^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56597653 + ... + 56597656.

Almost surely, 2^226390618 is an apocalyptic number.

226390618 is a deficient number, since it is larger than the sum of its proper divisors (113195312).

226390618 is a wasteful number, since it uses less digits than its factorization.

226390618 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113195311.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 226390618 is about 15046.2825309111. The cubic root of 226390618 is about 609.4706668405.

The spelling of 226390618 in words is "two hundred twenty-six million, three hundred ninety thousand, six hundred eighteen".