18080202227 has 4 divisors (see below), whose sum is σ = 18866298000. Its totient is φ = 17294106456.

The previous prime is 18080202197. The next prime is 18080202247. The reversal of 18080202227 is 72220208081.

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

It is not a de Polignac number, because 18080202227 - 2¹⁴ = 18080185843 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 18080202193 and 18080202202.

It is not an unprimeable number, because it can be changed into a prime (18080202247) 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, 393047852 + ... + 393047897.

It is an arithmetic number, because the mean of its divisors is an integer number (4716574500).

Almost surely, 2^18080202227 is an apocalyptic number.

18080202227 is a deficient number, since it is larger than the sum of its proper divisors (786095773).

18080202227 is an equidigital number, since it uses as much as digits as its factorization.

18080202227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786095772.

The product of its (nonzero) digits is 7168, while the sum is 32.

The spelling of 18080202227 in words is "eighteen billion, eighty million, two hundred two thousand, two hundred twenty-seven".