18189380307 has 24 divisors (see below), whose sum is σ = 28217211600. Its totient is φ = 10392048576.

The previous prime is 18189380239. The next prime is 18189380311. The reversal of 18189380307 is 70308398181.

It is not a de Polignac number, because 18189380307 - 2⁸ = 18189380051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (18189380317) 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 23 ways as a sum of consecutive naturals, for example, 1438569 + ... + 1451157.

It is an arithmetic number, because the mean of its divisors is an integer number (1175717150).

Almost surely, 2^18189380307 is an apocalyptic number.

18189380307 is a deficient number, since it is larger than the sum of its proper divisors (10027831293).

18189380307 is a wasteful number, since it uses less digits than its factorization.

18189380307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22435 (or 22428 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 48.

The spelling of 18189380307 in words is "eighteen billion, one hundred eighty-nine million, three hundred eighty thousand, three hundred seven".