18493226 has 8 divisors (see below), whose sum is σ = 27768420. Its totient is φ = 9237088.

The previous prime is 18493217. The next prime is 18493243. The reversal of 18493226 is 62239481.

It can be written as a sum of positive squares in 2 ways, for example, as 16933225 + 1560001 = 4115^2 + 1249^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2021 + ... + 6408.

Almost surely, 2^18493226 is an apocalyptic number.

18493226 is a deficient number, since it is larger than the sum of its proper divisors (9275194).

18493226 is a wasteful number, since it uses less digits than its factorization.

18493226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9528.

The product of its digits is 20736, while the sum is 35.

The square root of 18493226 is about 4300.3750999186. The cubic root of 18493226 is about 264.4463390057.

The spelling of 18493226 in words is "eighteen million, four hundred ninety-three thousand, two hundred twenty-six".