18936226 has 8 divisors (see below), whose sum is σ = 29320704. Its totient is φ = 9162660.

The previous prime is 18936223. The next prime is 18936233. The reversal of 18936226 is 62263981.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (18936223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 152650 + ... + 152773.

It is an arithmetic number, because the mean of its divisors is an integer number (3665088).

Almost surely, 2^18936226 is an apocalyptic number.

18936226 is a deficient number, since it is larger than the sum of its proper divisors (10384478).

18936226 is a wasteful number, since it uses less digits than its factorization.

18936226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305456.

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

The square root of 18936226 is about 4351.5774151450. The cubic root of 18936226 is about 266.5412782035.

The spelling of 18936226 in words is "eighteen million, nine hundred thirty-six thousand, two hundred twenty-six".