18203032227 has 16 divisors (see below), whose sum is σ = 24317298720. Its totient is φ = 12112084992.

The previous prime is 18203032219. The next prime is 18203032249. The reversal of 18203032227 is 72223030281.

It is not a de Polignac number, because 18203032227 - 2³ = 18203032219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18203032194 and 18203032203.

It is not an unprimeable number, because it can be changed into a prime (18203032297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6768099 + ... + 6770787.

It is an arithmetic number, because the mean of its divisors is an integer number (1519831170).

Almost surely, 2^18203032227 is an apocalyptic number.

18203032227 is a deficient number, since it is larger than the sum of its proper divisors (6114266493).

18203032227 is a wasteful number, since it uses less digits than its factorization.

18203032227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6182.

The product of its (nonzero) digits is 8064, while the sum is 30.

The spelling of 18203032227 in words is "eighteen billion, two hundred three million, thirty-two thousand, two hundred twenty-seven".