18189429327 has 12 divisors (see below), whose sum is σ = 27819127440. Its totient is φ = 11412975168.

The previous prime is 18189429317. The next prime is 18189429341. The reversal of 18189429327 is 72392498181.

18189429327 is a `hidden beast` number, since 1 + 8 + 189 + 429 + 32 + 7 = 666.

It is not a de Polignac number, because 18189429327 - 2⁶ = 18189429263 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18189429317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 59442427 + ... + 59442732.

It is an arithmetic number, because the mean of its divisors is an integer number (2318260620).

Almost surely, 2^18189429327 is an apocalyptic number.

18189429327 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

18189429327 is a deficient number, since it is larger than the sum of its proper divisors (9629698113).

18189429327 is a wasteful number, since it uses less digits than its factorization.

18189429327 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118885182 (or 118885179 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 54.

The spelling of 18189429327 in words is "eighteen billion, one hundred eighty-nine million, four hundred twenty-nine thousand, three hundred twenty-seven".