18801347227 has 16 divisors (see below), whose sum is σ = 20598383008. Its totient is φ = 17054945280.

The previous prime is 18801347189. The next prime is 18801347239. The reversal of 18801347227 is 72274310881.

It is a cyclic number.

It is not a de Polignac number, because 18801347227 - 2¹¹ = 18801345179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18801347297) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 904048 + ... + 924610.

It is an arithmetic number, because the mean of its divisors is an integer number (1287398938).

Almost surely, 2^18801347227 is an apocalyptic number.

18801347227 is a deficient number, since it is larger than the sum of its proper divisors (1797035781).

18801347227 is a wasteful number, since it uses less digits than its factorization.

18801347227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21790.

The product of its (nonzero) digits is 150528, while the sum is 43.

The spelling of 18801347227 in words is "eighteen billion, eight hundred one million, three hundred forty-seven thousand, two hundred twenty-seven".