18896227 has 4 divisors (see below), whose sum is σ = 21595696. Its totient is φ = 16196760.

The previous prime is 18896183. The next prime is 18896237. The reversal of 18896227 is 72269881.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 72269881 = 229 ⋅315589.

It is a cyclic number.

It is not a de Polignac number, because 18896227 - 2¹¹ = 18894179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18896237) 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, 1349724 + ... + 1349737.

It is an arithmetic number, because the mean of its divisors is an integer number (5398924).

Almost surely, 2^18896227 is an apocalyptic number.

18896227 is a deficient number, since it is larger than the sum of its proper divisors (2699469).

18896227 is an equidigital number, since it uses as much as digits as its factorization.

18896227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2699468.

The product of its digits is 96768, while the sum is 43.

The square root of 18896227 is about 4346.9790659721. The cubic root of 18896227 is about 266.3534741485.

The spelling of 18896227 in words is "eighteen million, eight hundred ninety-six thousand, two hundred twenty-seven".