18189301327 has 2 divisors, whose sum is σ = 18189301328. Its totient is φ = 18189301326.

The previous prime is 18189301307. The next prime is 18189301357. The reversal of 18189301327 is 72310398181.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18189301327 - 2⁷ = 18189301199 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18189301307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9094650663 + 9094650664.

It is an arithmetic number, because the mean of its divisors is an integer number (9094650664).

Almost surely, 2^18189301327 is an apocalyptic number.

18189301327 is a deficient number, since it is larger than the sum of its proper divisors (1).

18189301327 is an equidigital number, since it uses as much as digits as its factorization.

18189301327 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 43.

The spelling of 18189301327 in words is "eighteen billion, one hundred eighty-nine million, three hundred one thousand, three hundred twenty-seven".