18240975185 has 16 divisors (see below), whose sum is σ = 22455207936. Its totient is φ = 14218208448.

The previous prime is 18240975139. The next prime is 18240975253. The reversal of 18240975185 is 58157904281.

It is a cyclic number.

It is not a de Polignac number, because 18240975185 - 2⁸ = 18240974929 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 121634 + ... + 226443.

It is an arithmetic number, because the mean of its divisors is an integer number (1403450496).

Almost surely, 2^18240975185 is an apocalyptic number.

It is an amenable number.

18240975185 is a deficient number, since it is larger than the sum of its proper divisors (4214232751).

18240975185 is a wasteful number, since it uses less digits than its factorization.

18240975185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348352.

The product of its (nonzero) digits is 806400, while the sum is 50.

The spelling of 18240975185 in words is "eighteen billion, two hundred forty million, nine hundred seventy-five thousand, one hundred eighty-five".