18327227522 has 4 divisors (see below), whose sum is σ = 27490841286. Its totient is φ = 9163613760.

The previous prime is 18327227473. The next prime is 18327227531. The reversal of 18327227522 is 22572272381.

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

It can be written as a sum of positive squares in only one way, i.e., 18151903441 + 175324081 = 134729^2 + 13241^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 18327227522.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4581806879 + ... + 4581806882.

Almost surely, 2^18327227522 is an apocalyptic number.

18327227522 is a deficient number, since it is larger than the sum of its proper divisors (9163613764).

18327227522 is an equidigital number, since it uses as much as digits as its factorization.

18327227522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9163613763.

The product of its digits is 188160, while the sum is 41.

The spelling of 18327227522 in words is "eighteen billion, three hundred twenty-seven million, two hundred twenty-seven thousand, five hundred twenty-two".